Light guide plate and display device
US-11385395-B1 · Jul 12, 2022 · US
Light source module, liquid crystal display device, and a display apparatus
US12007645B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12007645-B2 |
| Application number | US-202217597943-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 14, 2022 |
| Priority date | Jan 10, 2022 |
| Publication date | Jun 11, 2024 |
| Grant date | Jun 11, 2024 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A light source module, a liquid crystal display device, and a display apparatus are provided. The light source module disposes a plurality of micro structures disposed at intervals on a light guide surface of a light guide plate and disposes a sum of areas of the micro structures on an unit area on the light guide surface gradually increasing from a light incident side to a light exiting side, which can improve uniformity of light exiting brightness of each region of the light guide plate.
First claim
Opening claim text (preview).
What is claimed is: 1. A light source module, comprising: a light guide plate, comprising a light guide surface and a light exiting surface disposed oppositely, wherein a plurality of micro structures are disposed on a light guide surface of the light guide plate at intervals, a side of the light guide plate disposed toward the light source is defined as a light incident side, a side of the light guide plate disposed away from the light source is defined as a light exiting side, and from the light incident side to the light exiting side, a sum of areas of the micro structures disposed on a unit area of the light guide surface gradually increases; and a light source disposed on a side of the light guide plate; wherein from the light incident side to the light exiting side, a number of the micro structures disposed on each unit area of the light guide surface gradually increases; and from the light incident side to the light exiting side, an area of each of the micro structures disposed on the light guide surface gradually increases. 2. The light source module according to claim 1 , wherein the light source module comprises a reflector disposed on a side of the light guide plate. 3. The light source module according to claim 2 , wherein the reflector is disposed on each of sides of the light guide plate except for a region of the light incident side. 4. The light source module according to claim 2 , wherein the reflector is adhered to the light guide plate through a light transmission adhesive. 5. The light source module according to claim 1 , wherein the micro structures are a protrusion structures or a recess structures. 6. A liquid crystal display device, comprising: a reflective liquid crystal display panel; and the light source module according to claim 1 stacked on the reflective liquid crystal display panel; wherein the light exiting surface of the light guide plate is disposed toward a display side of the reflective liquid crystal display panel. 7. A light source module, comprising: a light guide plate, comprising a light guide surface and a light exiting surface disposed oppositely, wherein a plurality of micro structures are disposed on a light guide surface of the light guide plate at intervals, a side of the light guide plate disposed toward the light source is defined as a light incident side, a side of the light guide plate disposed away from the light source is defined as a light exiting side, and from the light incident side to the light exiting side, a sum of areas of the micro structures disposed on a unit area of the light guide surface gradually increases; and a light source disposed on a side of the light guide plate; wherein from the light incident side to the light exiting side, a number of the micro structures disposed on each unit area of the light guide surface gradually decreases; and from the light incident side to the light exiting side, an area of each of the micro structures disposed on the light guide surface gradually increases. 8. The light source module according to claim 7 , wherein the light source module comprises a reflector disposed on a side of the light guide plate. 9. The light source module according to claim 8 , wherein the reflector is disposed on each of sides of the light guide plate except for a region of the light incident side. 10. The light source module according to claim 8 , wherein the reflector is adhered to the light guide plate through a light transmission adhesive. 11. The light source module according to claim 7 , wherein the micro structures are a protrusion structures or a recess structures. 12. A liquid crystal display device, comprising: a reflective liquid crystal display panel; and the light source module according to claim 7 stacked on the reflective liquid crystal display panel; wherein the light exiting surface of the light guide plate is disposed toward a display side of the reflective liquid crystal display panel. 13. A light source module, comprising: a light guide plate, comprising a light guide surface and a light exiting surface disposed oppositely, wherein a plurality of micro structures are disposed on a light guide surface of the light guide plate at intervals, a side of the light guide plate disposed toward the light source is defined as a light incident side, a side of the light guide plate disposed away from the light source is defined as a light exiting side, and from the light incident side to the light exiting side, a sum of areas of the micro structures disposed on a unit area of the light guide surface gradually increases; and a light source disposed on a side of the light guide plate; wherein from the light incident side to the light exiting side, a number of the micro structures disposed on each unit area of the light guide surface gradually increases; and from the light incident side to the light exiting side, an area of each of the micro structures disposed on the light guide surface gradually decreases. 14. The light source module according to claim 13 , wherein the light source module comprises a reflector disposed on a side of the light guide plate. 15. The light source module according to claim 14 , wherein the reflector is disposed on each of sides of the light guide plate except for a region of the light incident side. 16. The light source module according to claim 14 , wherein the reflector is adhered to the light guide plate through a light transmission adhesive. 17. The light source module according to claim 13 , wherein the micro structures are a protrusion structures or a recess structures. 18. A liquid crystal display device, comprising: a reflective liquid crystal display panel; and the light source module according to claim 13 stacked on the reflective liquid crystal display panel; wherein the light exiting surface of the light guide plate is disposed toward a display side of the reflective liquid crystal display panel.
Assignees
Inventors
Classifications
including specially adapted reflectors · CPC title
Light emitting diode [LED] · CPC title
Reflecting element, sheet or layer · CPC title
reflective · CPC title
Front illuminating devices · CPC title
Patent family
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Frequently asked questions
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- What does patent US12007645B2 cover?
- A light source module, a liquid crystal display device, and a display apparatus are provided. The light source module disposes a plurality of micro structures disposed at intervals on a light guide surface of a light guide plate and disposes a sum of areas of the micro structures on an unit area on the light guide surface gradually increasing from a light incident side to a light exiting side, …
- Who is the assignee on this patent?
- Tcl China Star Optoelectronics Tech Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G02F1/133603. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Jun 11 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).