Patents by Inventor Cheng-Min Liao

Cheng-Min Liao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190244846
    Abstract: A transfer device for transferring a plurality of micro LED dies is provided. The transfer device includes a carrier plate, a plurality of deformable components, and a plurality of transfer heads. The plurality of deformable components are disposed on the carrier plate. The plurality of transfer heads are respectively disposed on the plurality of deformable components. Each of the transfer heads includes a plurality of micro protrusions arranged in an array on a side away from the corresponding one deformable component. Deformation of the deformable components leads to deformation of the transfer heads, such that a number of the micro protrusions in contact with the micro LED dies is decreased. Accordingly, the transfer device can easily release the micro LED dies.
    Type: Application
    Filed: May 2, 2018
    Publication date: August 8, 2019
    Applicant: Chunghwa Picture Tubes, LTD.
    Inventors: Wen-Jiunn Hsieh, Cheng-Min Liao, Wen-Tse Tseng
  • Patent number: 10372011
    Abstract: Provided are a display apparatus and an electrically controlled light valve including a first substrate, a second substrate disposed opposite to the first substrate, a first transparent conductive layer disposed on the first substrate, a second transparent conductive layer disposed on the second substrate, a first liquid layer disposed between the first and the second transparent conductive layers, a second liquid layer disposed between the first and the second transparent conductive layers and reflective particles. The first and the second liquid layers are respectively adjacent to the first and the second transparent conductive layers. The first liquid layer includes a polar liquid. The second liquid layer includes a non-polar liquid. Each reflective particle has a conductive body and a surface modification layer covering the conductive body. When the electrically controlled light valve is switched to a light-transmission mode, the reflective particles are evenly dispersed in the first liquid layer.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: August 6, 2019
    Assignee: Chunghwa Picture Tubes, LTD.
    Inventors: Wen-Jiunn Hsieh, Cheng-Min Liao, Wen-Tse Tseng
  • Publication number: 20190208159
    Abstract: Provided are a display apparatus and an electrically controlled light valve including a first substrate, a second substrate disposed opposite to the first substrate, a first transparent conductive layer disposed on the first substrate, a second transparent conductive layer disposed on the second substrate, a first liquid layer disposed between the first and the second transparent conductive layers, a second liquid layer disposed between the first and the second transparent conductive layers and reflective particles. The first and the second liquid layers are respectively adjacent to the first and the second transparent conductive layers. The first liquid layer includes a polar liquid. The second liquid layer includes a non-polar liquid. Each reflective particle has a conductive body and a surface modification layer covering the conductive body. When the electrically controlled light valve is switched to a light-transmission mode, the reflective particles are evenly dispersed in the first liquid layer.
    Type: Application
    Filed: March 23, 2018
    Publication date: July 4, 2019
    Applicant: Chunghwa Picture Tubes, LTD.
    Inventors: Wen-Jiunn Hsieh, Cheng-Min Liao, Wen-Tse Tseng
  • Publication number: 20130038816
    Abstract: A light guide plate comprises two supporting bars and a light transmission plate. Each of the supporting bars includes a wall and a first supporting protruded element. Each of the walls has a wall surface, which face each other. Each of the first supporting protruded elements is connected to one of the walls, and is protruded outside the wall surface. The light transmission plate has a light exiting surface, a light entering side surface and a bottom surface. The light exiting surface is disposed oppositely to the bottom surface, and the light entering side surface is connected between the light exiting surface and the bottom surface. The light transmission plate is connected between the supporting bars. Each of the first supporting protruded elements is disposed above the light exiting surface, and a first gap is disposed between each of the first supporting protruded elements and the light exiting surface.
    Type: Application
    Filed: February 21, 2012
    Publication date: February 14, 2013
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Shao-Keng HUANG, Cheng-Min Liao, Ching-Lung Chang
  • Patent number: 8337066
    Abstract: A backlight module includes a light guide plate, a first light module, and a second light module. The light guide plate includes first troughs and second troughs on opposite sides. The first light module includes a first substrate and first LEDs thereon. An opaque element is disposed on each first gap between two adjacent first LEDs, each first LED is embedded in one first trough. The second light module includes a second substrate and second LEDs thereon. An opaque element is disposed on each second gap between two adjacent second LEDs, and each second LED is embedded in one second trough. Each first LED is disposed to one second gap, and each second LED is disposed in one first gap. Light from first LED is absorbed by the opaque element on the second substrate, and that from the second LED is absorbed by the opaque element on the first substrate.
    Type: Grant
    Filed: December 30, 2010
    Date of Patent: December 25, 2012
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Ke-ming Yeh, Cheng-min Liao, Ju-yi Hsieh
  • Publication number: 20120210621
    Abstract: A display panel includes a frame, a panel body, and at least two elastic buffer members. The frame includes a frame body and a frame plate with a plane and an opening. The opening is located in the plane. The frame body is disposed on the plane and surrounds the opening. The panel body is disposed on the plane and covers the opening. The elastic buffer members are face to face disposed on the plane. The frame body surrounds the panel body and the elastic buffer members. Each elastic buffer member includes a stop block and a support plate with a contact plane facing the panel body. The support plate is connected between the stop block and the frame plate. The stop block protrudes from the contact plane. The panel body is located among the elastic buffer members and disposed between the stop blocks and the plane.
    Type: Application
    Filed: May 11, 2011
    Publication date: August 23, 2012
    Inventors: Shao-Keng HUANG, Cheng-Min Liao
  • Publication number: 20120081922
    Abstract: A backlight module includes a light guide plate, a first light module, and a second light module. The light guide plate includes first troughs and second troughs on opposite sides. The first light module includes a first substrate and first LEDs thereon. An opaque element is disposed on each first gap between two adjacent first LEDs, each first LED is embedded in one first trough. The second light module includes a second substrate and second LEDs thereon. An opaque element is disposed on each second gap between two adjacent second LEDs, and each second LED is embedded in one second trough. Each first LED is disposed to one second gap, and each second LED is disposed in one first gap. Light from first LED is absorbed by the opaque element on the second substrate, and that from the second LED is absorbed by the opaque element on the first substrate.
    Type: Application
    Filed: December 30, 2010
    Publication date: April 5, 2012
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: KE-MING YEH, Cheng-min Liao, Ju-yi Hsieh
  • Patent number: 7611274
    Abstract: A light-source fixing structure for the backlight module is disclosed. The light-source fixing structure includes: a light guide plate provided with a light-incident surface; a cover having a groove, wherein the groove has a surface facing toward to the light-incident surface of the light guide plate; a light bar arranged upon the surface of the groove. The light bar may be replaced easily by sliding out from the groove when the light bar is damaged. The cover not only may enhance the strength of the backlight module but also may prevent the backlight module over temperature.
    Type: Grant
    Filed: October 25, 2006
    Date of Patent: November 3, 2009
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chih-Chun Hsiao, Cheng-Min Liao
  • Publication number: 20090097261
    Abstract: A multi-function optical film including a substrate and an optical film is provided. The optical film is disposed on the substrate. The optical film includes a diffusion layer disposed on the substrate and a plurality of micro-protruding structures disposed on the diffusion layer in an array. Besides, the diffusion layer and the micro-protruding structures are formed by mixing a plurality of scattering particles and a transmissive material.
    Type: Application
    Filed: March 26, 2008
    Publication date: April 16, 2009
    Applicant: Chunghwa Picture Tubes, LTD.
    Inventors: Wen-Jiunn Hsieh, Wen-Tse Tseng, Cheng-Min Liao
  • Patent number: 7367707
    Abstract: A backlight module comprising a light guild plate, at least one lamp, a lower frame, at least one turning holder, a locating block and an upper frame is provided. The lower frame is used for carrying the light guild plate and the lamp. The light guide plate has light incidence planes and light emergence planes, and the lamp is disposed beside at least a part of the light incidence planes. The lamp has at least one turning angle, and the turning holder covers the turning angle of the lamp. The locating block is disposed on the turning holder, and the upper frame is disposed on the lower frame and exposes the light emergence plane. The upper frame has a locating opening, and the locating block is embedded in the locating opening. The backlight module provides three-dimensional preservation to preserve the lamp from the damage caused by external impact.
    Type: Grant
    Filed: December 16, 2005
    Date of Patent: May 6, 2008
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Kuo-Chiang Peng, Cheng-Min Liao
  • Publication number: 20080049444
    Abstract: A light-source fixing structure for the backlight module is disclosed. The light-source fixing structure includes: a light guide plate provided with a light-incident surface; a cover having a groove, wherein the groove has a surface facing toward to the light-incident surface of the light guide plate; a light bar arranged upon the surface of the groove. The light bar may be replaced easily by sliding out from the groove when the light bar is damaged. The cover not only may enhance the strength of the backlight module but also may prevent the backlight module over temperature.
    Type: Application
    Filed: October 25, 2006
    Publication date: February 28, 2008
    Inventors: Chih-Chun Hsiao, Cheng-Min Liao
  • Patent number: 7322734
    Abstract: A liquid crystal display (LCD) structure is provided. The LCD structure is that a backlight module having ventilated thin film with high reflective material combines with a liquid crystal panel. The backlight module includes a bottom and at least a ventilated thin film with high reflective material. The side plates of the bottom have at least an opening, and the ventilated thin film with high reflective material is disposed at the openings. The backlight module, making use of the openings at the bottom of the backplate and the ventilated thin film with high reflected material, can improve the heat-dissipating mechanism of the backlight module, thereby, can effectively lower the temperature of the backlight module.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: January 29, 2008
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Ru-Jih Shai, Cheng-Min Liao
  • Publication number: 20070177403
    Abstract: A prism of backlight module and structure thereof is provided. The prism includes a central area on which geometrical units are formed and arranged adjacent to each other on the prism and a periphery area, being a planar structure, located at two sides outside the central area and terminated at edges of the prism. The prism applied to a backlight module is provided by an integrity process or mold punching process or by providing a shielding surface formed by an ink print method on a lower surface of a base of the periphery area of the prism. As such, the problem of light condensing at edges of the prism in a general notebook computer due to absence of an upper diffuser may be reduced and light leakage may also be reduced.
    Type: Application
    Filed: January 31, 2006
    Publication date: August 2, 2007
    Applicant: Chunghwa Picture Tubes, Ltd.
    Inventors: Chih-Chun Hsiao, Cheng-Min Liao
  • Publication number: 20070147021
    Abstract: A liquid crystal display (LCD) structure is provided. The LCD structure is that a backlight module having ventilated thin film with high reflective material combines with a liquid crystal panel. The backlight module includes a bottom and at least a ventilated thin film with high reflective material. The side plates of the bottom have at least an opening, and the ventilated thin film with high reflective material is disposed at the openings. The backlight module, making use of the openings at the bottom of the backplate and the ventilated thin film with high reflected material, can improve the heat-dissipating mechanism of the backlight module, thereby, can effectively lower the temperature of the backlight module.
    Type: Application
    Filed: December 27, 2005
    Publication date: June 28, 2007
    Applicant: CHUNGHWA PICTURE TUBES, LTD.
    Inventors: Ru-Jih Shai, Cheng-Min Liao
  • Publication number: 20070139964
    Abstract: A backlight module comprising a light guild plate, at least one lamp, a lower frame, at least one turning holder, a locating block and an upper frame is provided. The lower frame is used for carrying the light guild plate and the lamp. The light guide plate has light incidence planes and light emergence planes, and the lamp is disposed beside at least a part of the light incidence planes. The lamp has at least one turning angle, and the turning holder covers the turning angle of the lamp. The locating block is disposed on the turning holder, and the upper frame is disposed on the lower frame and exposes the light emergence plane. The upper frame has a locating opening, and the locating block is embedded in the locating opening. The backlight module provides three-dimensional preservation to preserve the lamp from the damage caused by external impact.
    Type: Application
    Filed: December 16, 2005
    Publication date: June 21, 2007
    Inventors: Kuo-Chiang Peng, Cheng-Min Liao
  • Patent number: 7232249
    Abstract: A back light module is disclosed. The back light module comprises a frame, a reflective mask, a light guide plate, a linear light source and a baffle plate, wherein the reflective mask is installed in the frame. The linear light source is surrounded by the light guide plate and the reflective mask. The baffle plate is disposed between the linear light source and the light guide plate and the baffle plate is connected to the reflective mask and the frame. The baffle plate disposed between the linear light source and the light guide plate is adapted for absorbing impact force during the impact test and reducing the possibility of displacement of the light guide plate. Thus, the possibility of damage to the linear light source due to displacement of the light guide plate can be effectively reduced. Thus, the reliability of the notebook computer can be effectively promoted.
    Type: Grant
    Filed: February 24, 2005
    Date of Patent: June 19, 2007
    Assignee: Chunghwa Picture Tubes, Ltd.
    Inventors: Chih-Chun Hsiao, Cheng-Min Liao
  • Publication number: 20070120878
    Abstract: A flat panel monitor includes a first frame having an opening at a bend; a second frame having a protrusion corresponding to the opening, the protrusion being inserted into the opening for fixing the second frame to the first frame; and a display panel fixed on a housing formed by fixing the second frame to the first frame.
    Type: Application
    Filed: November 29, 2005
    Publication date: May 31, 2007
    Inventors: Chih-Chun Hsiao, Cheng-Min Liao
  • Publication number: 20070091645
    Abstract: An edge-type backlight module includes a light guide plate including a first lock mechanism, a backing plate installed on one side of the light guide plate including an opening located in a position corresponding to a position where the first lock mechanism is located, and a second lock mechanism for fixing the light guide plate and the backing plate with the first lock mechanism in a locking manner.
    Type: Application
    Filed: October 25, 2005
    Publication date: April 26, 2007
    Inventors: Yi-Ching Chang, Chih-Chun Hsiao, Cheng-Min Liao
  • Patent number: 7134767
    Abstract: A method for improving backlight uniformity is disclosed in which the two outermost lamps near each of the two sides of the back plate are positioned higher than the other lamps. Hence, the outermost lamps are closer to the scattering plate, thus improving the brightness at the two sides of the LCD panel such that various illumination and the shadows generated in specific regions on the LCD panel are avoided.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: November 14, 2006
    Assignee: Chunghwa Picture Tubes
    Inventors: Cheng-Min Liao, Wen-Yu Lin
  • Publication number: 20060187681
    Abstract: A back light module is disclosed. The back light module comprises a frame, a reflective mask, a light guide plate, a linear light source and a baffle plate, wherein the reflective mask is installed in the frame. The linear light source is surrounded by the light guide plate and the reflective mask. The baffle plate is disposed between the linear light source and the light guide plate and the baffle plate is connected to the reflective mask and the frame. The baffle plate disposed between the linear light source and the light guide plate is adapted for absorbing impact force during the impact test and reducing the possibility of displacement of the light guide plate. Thus, the possibility of damage to the linear light source due to displacement of the light guide plate can be effectively reduced. Thus, the reliability of the notebook computer can be effectively promoted.
    Type: Application
    Filed: February 24, 2005
    Publication date: August 24, 2006
    Inventors: Chih-Chun Hsiao, Cheng-Min Liao