Displaying module and displaying device

Patent metadata

Field	Value
Publication number	US-12353081-B2
Application number	US-202218021824-A
Country	US
Kind code	B2
Filing date	Apr 29, 2022
Priority date	Apr 29, 2022
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

A displaying module includes a back plate, a light guide plate fixed to the back plate, a plastic frame covering the back plate and a display panel located on the plastic frame, the plastic frame is of a shape of an annular frame, and the plastic frame includes a bearing face. A first position of the bearing face of the plastic frame is a curved surface, and the curved surface curves in a direction further away from the display panel, whereby a warping degree of the curved surface is a first warping degree, wherein the first position is a position of the bearing face that faces a second position of the display panel, the second position is a position of a region of the display panel where light leakage happens, and the first warping degree is equal to a warping degree of the display panel when the display panel curves.

First claim

The invention claimed is:

1. A displaying module, the displaying module comprising a back plate, a light guide plate fixed to the back plate, a plastic frame covering the back plate and a display panel located on the plastic frame, wherein the plastic frame is of a shape of an annular frame, and the plastic frame comprises a bearing face, a bottom face opposite to the bearing face, and an inner annular face perpendicular to the bottom face;
the display panel covers the bearing face, the bottom face abuts the back plate, and the light guide plate is fixed in a fixing space enclosed by the inner annular face; and
a first position of the bearing face of the plastic frame is a curved surface, and the curved surface curves in a direction further away from the display panel, whereby a warping degree of the curved surface is a first warping degree, wherein the first position is a position of the bearing face that faces a second position of the display panel, the second position is a position of a region of the display panel where light leakage happens, and the first warping degree is equal to a warping degree of the display panel when the display panel curves,
wherein the plastic frame is a square plastic frame, four corners of the plastic frame include at least one curved-surface corner, a bearing face of the curved-surface corner is a curved surface, and a length of two sides intersecting at the curved-surface corner is a first length, wherein the first length is a distance between two facing lateral sides of the region of the display panel where light leakage happens, and
wherein the curved-surface corner comprises a first warping face and a second warping face,
the first warping face and the second warping face intersect, a projection of the first warping face in a direction perpendicular to a displaying face of the display panel is located at a position where a longer side edge of the display panel is located, and a projection of the second warping face in the direction perpendicular to the displaying face of the display panel is located at a position where a shorter side edge of the display panel is located, wherein the longer side edge and the shorter side edge are two intersecting sides of the display panel, and a length of the longer side edge is greater than a length of the shorter side edge, and
both of the first warping face and the second warping face curve in the direction further away from the display panel.

2. The displaying module according to claim 1 , wherein if a light-leakage amount of the displaying module is a first light-leakage amount, a warping degree of the first warping face is a second warping degree;
if a light-leakage amount of the display panel is a second light-leakage amount, the warping degree of the first warping face is a third warping degree; and
if the light-leakage amount of the display panel is a third light-leakage amount, the warping degree of the first warping face is a fourth warping degree, wherein the second light-leakage amount is within a preset light-leakage range of the display panel, the first light-leakage amount is less than the second light-leakage amount, and the third light-leakage amount is greater than the second light-leakage amount; and
the second warping degree is less than the third warping degree, and the third warping degree is less than the fourth warping degree.

3. The displaying module according to claim 2 , wherein if the warping degree of the first warping face is the second warping degree, a connecting line between an end of the curved surface and an end of a flat face of the bearing face is a first curve, and if the warping degree of the first warping face is the fourth warping degree, a connecting line between the end of the curved surface and the end of the flat face of the bearing face is a second curve; and
both of the first curve and the second curve are tangent to the end of the flat face of the bearing face, and a curvature of the first curve is less than a curvature of the second curve, wherein the flat face of the bearing face is a face of the bearing face other than the curved surface, the end of the flat face refers to one end of the flat face that is closer to the curved surface, and the end of the curved surface refers to one end of the curved surface that is further from the flat face.

4. The displaying module according to claim 2 , wherein if the warping degree of the first warping face is the third warping degree, a connecting line between an end of the curved surface and an end of a flat face of the bearing face is a first straight line;
wherein the flat face of the bearing face is a face of the bearing face other than the curved surface, the end of the flat face refers to one end of the flat face that is closer to the curved surface, and the end of the curved surface refers to one end of the curved surface that is further from the flat face.

5. The displaying module according to claim 2 , wherein if the warping degree of the first warping face is the second warping degree, a distance between the end of the curved surface and the flat face is a first distance;
if the warping degree of the first warping face is the third warping degree, the distance between the end of the curved surface and the flat face is a second distance; and
if the warping degree of the first warping face is the fourth warping degree, the distance between the end of the curved surface and the flat face is a third distance;
wherein the first distance is less than the second distance, and the second distance is less than the third distance, wherein the end of the flat face refers to one end of the flat face that is closer to the curved surface, and the end of the curved surface refers to one end of the curved surface that is further from the flat face.

6. The displaying module according to claim 5 , wherein the second distance is equal to a first numerical value, wherein the first numerical value refers to a deviation amount of the bearing face in the direction further away from the display panel when the light-leakage amount of the display panel is within the preset light-leakage range.

7. The displaying module according to claim 1 , wherein if the light-leakage amount of the display panel is the first light-leakage amount, a brightness of a light leaking site of the region of the display panel where light leakage happens is less than 0.4 nit;
if a light-leakage amount of the display panel is a second light-leakage amount, the brightness of the light leaking site of the region of the display panel where light leakage happens is greater than or equal to 0.4 nit, and less than 0.6 nit; and
if the light-leakage amount of the display panel is a third light-leakage amount, the brightness of the light leaking site of the region of the display panel where light leakage happens is greater than or equal to 0.6 nit.

8. The displaying module according to claim 1 , wherein if a light-leakage amount of the display panel is a first light-leakage amount, a warping degree of the second warping face is a fifth warping degree;
if a light-leakage amount of the display panel is a second light-leakage amount, the warping degree of the second warping face is a sixth warping degree; and
if the light-leakage amount of the display panel is a third light-leakage amount, the warping degree of the second warping face is a seventh warping degree, wherein the second light-leakage amount refers to an average value of the light-leakage amount when the display panel has light leakage, the first light-leakage amount is less than the second light-leakage amount, and the third light-leakage amount is greater than the second light-leakage amount; and
the fifth warping degree is less than the sixth warping degree, and the sixth warping

Assignees

• Fuzhou Boe Optoelectronics Tech Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Zhang Han
• Diao Kai
• Chen Ming
• Zhao Hongyu
• Zheng Dingjie
• Yu Hui
• Lai Shuwen

Classifications

• G02B6/0088

  of the light guide or other optical sheets in the package · CPC title

• G02F1/133322 Primary

  Mechanical guidance or alignment of LCD panel support components · CPC title

• G02F1/133314 Primary

  Back frames · CPC title

• G02F1/13

  based on liquid crystals, e.g. single liquid crystal display cells · CPC title

• G02F1/1333

  Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence) · CPC title