Abstract: A first resin member including a first contact surface and formed of laser beam-transmissive resin and a second resin member including a second contact surface, which contacts the first contact surface, and formed of laser beam-absorbing resin are arranged one upon the other. A laser welding apparatus includes a clamping unit abutting the second resin member and applying clamping force to the second resin member, a laser emitter emitting laser beam, a laser controller controlling output of the laser beam, a displacement sensor measuring displacement of the second contact surface in stacking direction of the resin members, and a control unit controlling the clamping unit to adjust the clamping force corresponding to displacement amount of the second contact surface continuously or intermittently obtained from the displacement sensor.

Abstract: A first resin member including a first contact surface and formed of laser beam-transmissive resin and a second resin member including a second contact surface, which contacts the first contact surface, and formed of laser beam-absorbing resin are arranged one upon the other. A laser welding apparatus includes a clamping unit abutting the second resin member and applying clamping force to the second resin member, a laser emitter emitting laser beam, a laser controller controlling output of the laser beam, a displacement sensor measuring displacement of the second contact surface in stacking direction of the resin members, and a control unit controlling the clamping unit to adjust the clamping force corresponding to displacement amount of the second contact surface continuously or intermittently obtained from the displacement sensor.

Abstract: One embodiment, among others, of an LCD panel includes an array substrate, a CF substrate facing the array substrate and offset by a cell gap from the array substrate, a plurality of spacers positioned on the array substrate or the CF substrate for maintaining the cell gap and supporting the array substrate and the CF substrate, and liquid crystal molecules sealed between the array substrate and the CF substrate. The spacers have different coefficients of elasticity per unit area. Other embodiments are included.

Abstract: One embodiment, among others, of an LCD panel includes an array substrate, a CF substrate facing the array substrate and offset by a cell gap from the array substrate, a plurality of spacers positioned on the array substrate or the CF substrate for maintaining the cell gap and supporting the array substrate and the CF substrate, and liquid crystal molecules sealed between the array substrate and the CF substrate. The spacers have different coefficients of elasticity per unit area. Other embodiments are included.