Liquid crystal display

• US 9,285,941 B2
• Filed: 09/27/2013
• Issued: 03/15/2016
• Est. Priority Date: 05/08/2013
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Jeon, Myoung-Ha, Lee, Kyung Mo, Yeon, Yeun Mo, Kim, Jin Se
• Primary Examiner(s): Okebato, Sahlu
• Application Number:
  US14/039,725
• Publication Number:
  US 20140333519A1
• Time in Patent Office: 900 Days
• Field of Search: 345/102
• US Class Current: 1/1
• CPC Class Codes: G06F 3/046 by electromagnetic means

Abstract

A liquid crystal display includes a liquid crystal panel, a backlight assembly, and a digitizer module. The liquid crystal panel is configured to display an image. The backlight assembly includes: a light emitting diode configured to provide light to the liquid crystal panel; and a light guide configured to guide the light from the light emitting diode towards the liquid crystal panel. The digitizer module includes: a sensor board and a supporting substrate configured to support the sensor board. The backlight assembly is disposed between the liquid crystal panel and the supporting substrate. A size of the supporting substrate is greater than a size of the sensor board. The light emitting diode and the sensor board are disposed on the supporting substrate.

Claims

1. A liquid crystal display, comprising:

a liquid crystal panel configured to display an image;

a backlight assembly comprising;

a light emitting diode configured to provide light to the liquid crystal panel; and

a light guide plate configured to guide the light from the light emitting diode towards the liquid crystal panel; and

a digitizer module comprising a sensor board and a supporting substrate configured to support the sensor board, the backlight assembly being disposed between the liquid crystal panel and the supporting substrate,

wherein the sensor board is disposed on a first portion of the supporting substrate, and

wherein the light emitting diode is disposed on a second portion of the supporting substrate, the second portion being disposed outside the first portion.

2. The liquid crystal display of claim 1, wherein the supporting substrate comprises a non-magnetic material.

3. The liquid crystal display of claim 2, wherein the sensor board comprises loop coils configured to facilitate detection of electromagnetic signals.

4. The liquid crystal display of claim 3, wherein the backlight assembly further comprises:

a reflective sheet configured to reflect incident light towards the liquid crystal panel,

wherein the light guide is disposed on the reflective sheet.

5. The liquid crystal display of claim 4, wherein the reflective sheet is disposed on the sensor board.

6. The liquid crystal display of claim 5, further comprising:

a mold frame enclosing the backlight assembly,

wherein the mold frame comprises an open upper surface and an open lower surface.

7. The liquid crystal display of claim 6, wherein the mold frame is disposed on a third portion of the supporting substrate, the third portion being disposed outside the first and second portions.

8. The liquid crystal display of claim 6, wherein the supporting substrate further comprises extending portions longitudinally extending in different directions.

9. The liquid crystal display of claim 8, wherein the extending portions are bent inside the mold frame.

10. The liquid crystal display of claim 9, wherein the extending portions are disposed between the mold frame and the backlight assembly.

11. The liquid crystal display of claim 10, further comprising:

a top chassis,

wherein the backlight assembly is vertically disposed between the top chassis and the supporting substrate, and

wherein the mold frame is horizontally disposed between the top chassis and the extending portions.

12. The liquid crystal display of claim 11, wherein:

the liquid crystal panel comprises a flexible printed circuit substrate;

a first portion of the flexible printed circuit substrate is vertically disposed between the top chassis and the mold frame; and

a second portion of the flexible circuit board is bent from the first portion, the second portion being horizontally disposed between the top chassis and the mold frame.

13. A display device, comprising:

a top chassis;

a mold frame;

a display panel configured to display an image,

the display panel being vertically disposed between the mold frame and the top chassis; and

a digitizer module comprising;

a sensor board configured to detect electromagnetic changes caused, at least in part, by encroachment of a resonance circuit; and

a supporting substrate configured to support the sensor board, wherein the display panel is vertically disposed between the supporting substrate and the top chassis,

wherein the mold frame is configured to;

support at least a portion of the digitizer module therein; and

interface with the top chassis, and

wherein the mold frame is horizontally disposed between the top chassis and the digitizer module; and

the supporting substrate comprises extending portions bent from the supporting substrate, the extending portions extending towards the top chassis; and

the mold frame is horizontally disposed between the extending portions and the top chassis.

14. The display device of claim 13, wherein the supporting substrate comprises a non-magnetic material.

15. The display device of claim 14, wherein the sensor board comprises loop coils configured to facilitate detection of the electromagnetic changes.

16. The display device of claim 13, further comprising:

a backlight assembly comprising;

a light emitting diode configured to provide light to the display panel; and

a light guide plate configured to guide light from the light emitting diode towards the display panel,

wherein the mold frame is configured to support the backlight assembly therein.

17. The display device of claim 16, wherein the light emitting diode is disposed on the supporting substrate.

18. The display device of claim 16, wherein respective lower surfaces of the top chassis, the mold frame, and the supporting substrate are substantially coplanar.

19. The display device of claim 13, wherein:

the display panel comprises a flexible printed circuit substrate;

a first portion of the flexible printed circuit substrate is vertically disposed between the top chassis and the mold frame; and

a second portion of the flexible circuit board is bent from the first portion, the second portion being horizontally disposed between the top chassis and the mold frame.