Abstract: A rechargeable electric power tool includes a motor driven by a secondary battery, a switching element for regulating power distribution to the motor, a motor control unit for controlling rotation of the motor through the switching element, a lead wire for supplying a drive current to the motor therethrough and a trigger switch changed over by a user for turning on or off the drive current supplied to the motor through the lead wire. In the rechargeable electric power tool, upon changeover of the trigger switch, a microcomputer determines a magnitude relation between a detected temperature outputted from a first thermistor and a first temperature threshold value. If the detected temperature is determined to be greater than the first temperature threshold value, the microcomputer is set in a limited operation mode in which a revolution number of the motor is limited to a predetermined value or less.

Abstract: A liquid crystal display device 10 of the present invention includes a liquid crystal panel 11 and a lighting device 12. The liquid crystal panel 11 has a liquid crystal layer 50 between a pair of glass substrates 31 and 41. The lighting device 12 supplies illumination light to the liquid crystal panel 11. The glass substrate 31 at least has a colored portion including a nonbridging oxygen hole center in an area that can block light to luminance defect area X that is a possible cause of a luminance point defect.

Abstract: A liquid crystal display device includes a liquid crystal panel and a lighting device. The liquid crystal panel has a liquid crystal layer provided between a pair of glass substrates. The lighting device supplies illumination light to the liquid crystal panel. At least one of the glass substrates has a photonic crystal formed in a position so that it stops light from reaching a luminance point defect occurrence portion in the liquid crystal layer that is a cause of a luminance point defect. The photonic crystal absorbs light having a color displayable in the luminance point defect occurrence portion.

Abstract: A liquid crystal display device 10 of the present invention includes a liquid crystal panel 11 and a lighting device 12. The liquid crystal panel 11 has a liquid crystal layer 50 between a pair of glass substrates 31 and 41. The lighting device 12 provides illumination light to the liquid crystal panel 11. A concave lens 60 is formed on the glass substrate 41 among the pair of glass substrates 31 and 41, which is arranged on a side opposite from the lighting device 12. The concave lens 60 has a recess on a surface of glass substrate 41 on an opposite side from the liquid crystal layer 50 in an area overlapping a black dot failure occurrence area when viewed in plan. A light transmissive material 70 having a refraction index equal to or higher than the glass substrate 41 is applied to at least a part of the concave lens 60.

Abstract: In a rechargeable electric power tool, upon changeover of a trigger switch, a microcomputer determines the magnitude relation between the detected temperature outputted from the first thermistor and the first temperature threshold value, the second temperature threshold value and the third temperature threshold value, and the magnitude relation between the first calculated temperature increase rate and the first preset temperature increase rate. If the detected temperature is determined to be greater than the first temperature threshold value or if the first calculated temperature increase rate is determined to be greater than the first preset temperature increase rate after the detected temperature has been determined to be greater than the second temperature threshold value, the microcomputer is set in a limited operation mode in which the revolution number of the motor is limited to a predetermined value or less.

Abstract: A liquid crystal display device 10 in accordance with the present invention includes a liquid crystal 11 and a lighting device 12, the liquid crystal panel 11 having a liquid crystal layer 50 provided between a pair of glass substrates 31, 41, the lighting device 12 supplying illumination light to the liquid crystal panel 11. The liquid crystal display device 10 is characterized in that a metal-halide containing region 60 is formed in a position in one of the pair of glass substrates 31, 41. The metal-halide containing region 60 contains a crystal of metal halide which exhibits photochromism in the light supplied from the lighting device 12. The position is capable of blocking light toward a luminance point defect occurrence portion X that becomes a cause of a luminance point defect. The one of the pair of glass substrates 31, 41 is disposed on the lighting device 12 side.

Abstract: A method of manufacturing a liquid crystal display device of the present invention includes a color defect compensation process for compensating for a color defect if it is present in a color filter that includes color portions in a plurality of colors. The color defect compensation process includes specifying a compensation area in at least one of glass substrate among a pair of glass substrates, the compensation area that overlaps a shadow of a color defect occurrence area, which is a possible cause of the color defect, and the shadow projected on a glass substrate, doping metal ions that correspond to a color of the color portion that includes the color defect occurrence area in the compensation area of the glass substrate, which is specified, and forming a colored portion having the same color as the color portion that includes the color defect occurrence area in the compensation area.

Abstract: A liquid crystal display apparatus, includes a liquid crystal display panel including a first substrate provided on a display light receiving side, and a second substrate provided on a display light exiting side so as to oppose the first substrate with a liquid crystal material interposed therebetween, the liquid crystal display panel having a bright dot defect portion therein, wherein: the first substrate includes a light-blocking portion formed in a region thereof corresponding to the bright dot defect portion; and the second substrate includes a light-collecting portion formed in a region thereof corresponding to the bright dot defect portion.

Abstract: A battery charger includes an attachment portion capable of being connected to a plurality of battery packs; a connection unit for connecting one of the battery packs connected to the attachment portion to a charging path; a state detection unit for detecting a state of each of the battery packs; a remaining capacity detection unit; and a charging control unit. The remaining capacity detection unit detects a remaining capacity based on the state of the battery pack detected by the state detection unit after each of the battery pack is charged for a specified period of time. Further, the charging control unit assigns priorities to the battery packs such that one whose remaining capacity detected by the remaining capacity detection unit is closer to a fully charged state thereof has a higher priority, and controls the connection unit to charge the battery packs according to the assigned priorities.

Abstract: A rotary tool includes an externally operable operation switch; a motor serving as a power source; a power transfer block for transferring the rotation of the motor; a load detection unit for detecting an amount of load of the motor; and a control unit for controlling the motor. The control unit is configured to perform an operation control by which the motor is controlled so that a rotation speed of the motor is increased in proportion to the operation amount of the operation switch and a feedback control by which the rotation speed of the motor is controlled depending on the detection result of the load detection unit. The control unit inhibits the feedback control during the time when the operation amount of the operation switch is equal to or less than a threshold and performing the feedback control only when the operation amount of the operation switch is greater than the threshold.

Abstract: A battery charger for charging a detachably attached battery pack by supplying an electric power from an external power source, the battery charger includes a notification unit for notifying a user of a charging operation by turning on or flickering a light-emitting member. The notification unit notifies the user of a power connection state of the battery charger by turning on or flickering the light-emitting member immediately after the battery charger is electrically connected to the external power source without attaching the battery pack thereto, and the notification unit turns off the light-emitting member after a predetermined period of time lapses and keeps the light-emitting member in an off-state until the battery pack is attached to the battery charger.

Abstract: A method for producing a motorized roller formed by accommodating a motor in a roller body so that the roller body is rotated when being driven by the motor, including the steps of: providing at least one elastic body; providing a bag for accommodating the elastic body; inserting the elastic body into the bag; removing air from the bag; inserting the bag accommodating the elastic body into a cavity of the roller body; and taking air in the bag so as to expand the elastic body so that the cavity is filled with the bag accommodating the elastic body.

Abstract: A charger for an electric power tool includes a charging unit for charging a secondary battery detachably attached to the charger; a notification unit for notifying an operation state of the charging unit by using a combination of a turn-on and turn-off of the notification unit; a brightness reducing unit for reducing a light brightness of the notification unit; and a controller for controlling the notification unit and the brightness reducing unit. If an operation state of the charging unit satisfies a specific condition, the controller controls the brightness reducing unit to reduce the light brightness of the notification unit.

Abstract: A power tool system with enhanced antitheft capability has a hand-held power tool and a wearable piece worn by the user. The wearable piece incorporates a certification unit which stores an identification code specifying the power tool and transmits the identification code to an authenticator incorporated in the power tool. The authenticator reads the identification code from the certification unit and to provide an authentication signal when the identification code is authenticated to be eligible for a privileged use of the power tool. The power tool is enabled only in response to the authentication signal, and otherwise disabled for avoiding unauthorized use. A communication is established between the certification unit and the authenticator for transmission of the identification code, while the user holds the power tool with the wearable piece carried on.

Abstract: A method of manufacturing a liquid crystal display device 10 of the present invention includes a color defect compensation process for compensating for a color defect if it is present in a color filter 42 that includes color portions 46 in a plurality of colors. The color defect compensation process includes specifying a compensation area in at least one of glass substrate 41 among a pair of glass substrates 31, 41, the compensation area that overlaps a shadow of a color defect occurrence area X, which is a possible cause of the color defect, and the shadow projected on a glass substrate 41, doping metal ions 60 that correspond to a color of the color portion 46 that includes the color defect occurrence area X in the compensation area of the glass substrate 41, which is specified, and forming a colored portion 61 having the same color as the color portion 46 that includes the color defect occurrence area X in the compensation area.

Abstract: A liquid crystal display device 10 of the present invention includes a liquid crystal panel 11 and a lighting device 12. The liquid crystal panel 11 has a liquid crystal layer 50 between a pair of glass substrates 31 and 41. The lighting device 12 supplies illumination light to the liquid crystal panel 11. The glass substrate 31 at least has a colored portion including a nonbridging oxygen hole center in an area that can block light to luminance defect area X that is a possible cause of a luminance point defect.

Abstract: A liquid crystal display device 10 of the present invention includes a liquid crystal panel 11 and a lighting device 12. The liquid crystal panel 11 has a liquid crystal layer 50 between a pair of glass substrates 31 and 41. The lighting device 12 provides illumination light to the liquid crystal panel 11. A concave lens 60 is formed on the glass substrate 41 among the pair of glass substrates 31 and 41, which is arranged on a side opposite from the lighting device 12. The concave lens 60 has a recess on a surface of glass substrate 41 on an opposite side from the liquid crystal layer 50 in an area overlapping a black dot failure occurrence area when viewed in plan. A light transmissive material 70 having a refraction index equal to or higher than the glass substrate 41 is applied to at least a part of the concave lens 60.

Abstract: A liquid crystal display device 10 in accordance with the present invention includes a liquid crystal 11 and a lighting device 12, the liquid crystal panel 11 having a liquid crystal layer 50 provided between a pair of glass substrates 31, 41, the lighting device 12 supplying illumination light to the liquid crystal panel 11. The liquid crystal display device 10 is characterized in that a metal-halide containing region 60 is formed in a position in one of the pair of glass substrates 31, 41. The metal-halide containing region 60 contains a crystal of metal halide which exhibits photochromism in the light supplied from the lighting device 12. The position is capable of blocking light toward a luminance point defect occurrence portion X that becomes a cause of a luminance point defect. The one of the pair of glass substrates 31, 41 is disposed on the lighting device 12 side.

Abstract: A liquid crystal display device 10 in accordance with the present invention includes a liquid crystal panel 11 and a lighting device 12. The liquid crystal panel 11 has a liquid crystal layer 40 provided between a pair of glass substrates 21, 31. The lighting device supplies illumination light to the liquid crystal panel 11. At least a glass substrate 21, which is one of the pair of glass substrates 21, 31 has a photonic crystal 50 formed in a position capable of blocking light toward a luminance point defect occurrence portion X that is a cause of a luminance point defect. The photonic crystal 50 is capable of absorbing light having a color displayable in the luminance point defect occurrence portion X.

Abstract: A liquid crystal display device 10 of the present invention includes a liquid crystal panel 11 and a lighting device 12. The liquid crystal panel 11 has a liquid crystal layer 50 between a pair of glass substrates 31 and 41. The lighting device 12 provides illumination light to the liquid crystal panel 11. An externally communicable void section 63 is formed in the glass substrate 31 among the pair of glass substrates 31 and 41 in an area that can block light toward a luminance point defect occurrence area X, which is a possible cause of a luminance point defect. The externally communicable void section 63 has a void portion 61 that is formed in the glass substrate 31 and a through portion that penetrates from the void portion 61 through an opposite surface of the glass substrate 31 from the liquid crystal layer 50. A light blocking layer 60 is formed in the externally communicable void section 63.