DISPLAY PANEL ASSEMBLY AND DISPLAY APPARATUS HAVING THE DISPLAY PANEL ASSEMBLY

• US 20090256819A1
• Filed: 03/23/2009
• Published: 10/15/2009
• Est. Priority Date: 04/11/2008
• Status: Abandoned Application

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: JUNG, Myung-Sook
• Application Number:
  US12/408,956
• Publication Number:
  US 20090256819A1
• Time in Patent Office: Days
• US Class Current: 345/174
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0447 Position sensing using the local deformation of sensor cells
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A display panel assembly according to one or more embodiments includes a display panel and a protective film. The display panel converts information input by physical pressure into an electric signal and displays an image. The protective film includes a base disposed on the display panel and a protruding part protruding from a surface of the base facing the display panel. The protective film transfers the physical pressure from the exterior to the display panel.

Claims

1. A display panel assembly, comprising:

a display panel adapted to convert information input by a physical pressure into an electric signal and to display an image; and

a protective film including a base disposed on the display panel and a protruding part protruding from a surface of the base facing the display panel, and adapted to transfer the physical pressure from an exterior to the display panel.

2. The display panel assembly of claim 1, wherein the base comprises a transparent plate.

3. The display panel assembly of claim 2, wherein the base comprises a plastic material.

4. The display panel assembly of claim 1, wherein the protruding part comprises a plurality of protrusions protruding from the surface of the base facing the display panel.

5. The display panel assembly of claim 4, wherein the protrusions have a similar shape and are separated from one another by a predetermined distance.

6. The display panel assembly of claim 5, wherein the protrusions have a hemispherical shape.

7. The display panel assembly of claim 1, wherein the display panel comprises:

a first substrate disposed under the protective film, the first substrate including a first sensing electrode sensing the physical pressure;

a second substrate disposed under the first substrate, the second substrate including a pixel displaying an image and a second sensing electrode corresponding to the first sensing electrode; and

a liquid crystal layer interposed between the first substrate and the second substrate.

8. The display panel assembly of claim 7, wherein the display panel detects a change in resistance caused by an electric contact between the first sensing electrode and the second sensing electrode, or detects a change in capacitance of a sensing capacitor defined by the first sensing electrode, the second sensing electrode and the liquid crystal layer.

9. The display panel assembly of claim 7, wherein the display panel comprises a display area displaying the image and a peripheral area surrounding the display area, and the base covers the display area of the display panel.

10. The display panel assembly of claim 7, further comprising a polarizer disposed between the display panel and the protective film to polarize light passing through the display panel.

11. The display panel assembly of claim 10, wherein the protruding part comprises a plurality of protrusions protruding from the surface of the base facing the display panel, and the protrusions are separated from the polarizer.

12. The display panel assembly of claim 10, wherein the protruding part comprises a plurality of protrusions protruding from the surface of the base facing the display panel, and the protrusions make contact with the polarizer.

13. The display panel assembly of claim 12, wherein a surface of the polarizer making contact with the protrusions is flat.

14. The display panel assembly of claim 1, wherein the display panel comprises:

an information input part disposed under the protective film, the information input part adapted to convert the information input by the physical pressure into the electric signal; and

an image display part disposed under the information input part, the image display part adapted to receive the electric signal from the information input part and display the image in response to the electric signal.

15. The display panel assembly of claim 14, wherein the protruding part comprises a plurality of protrusions protruding from the surface of the base facing the display panel, and the protrusions are separated from the information input part.

16. The display panel assembly of claim 14, wherein the protruding part comprises a plurality of protrusions protruding from the surface of the base facing the display panel, and the protrusions make contact with the information input part.

17. A display apparatus comprising:

a display panel adapted to convert information input by a physical pressure into an electric signal and to display an image;

a protective film including a base disposed on the display panel and a protruding part protruding from a surface of the base facing the display panel, and adapted to transfer the physical pressure from an exterior to the display panel; and

a backlight assembly disposed under the display panel, the backlight assembly providing the display panel with light.

18. The display apparatus of claim 17, wherein the display panel comprises:

a first substrate disposed under the protective film, the first substrate including a first sensing electrode to sense the physical pressure transferred from the protective film;

a second substrate disposed under the first substrate, the second substrate including a pixel displaying an image and a second sensing electrode corresponding to the first sensing electrode; and

a liquid crystal layer interposed between the first substrate and the second substrate.

19. The display apparatus of claim 18, wherein the display panel detects a change in resistance caused by an electric contact between the first sensing electrode and the second sensing electrode.

20. The display apparatus of claim 18, wherein the display panel detects a change of capacitance of a sensing capacitor defined by the first sensing electrode, the second sensing electrode and the liquid crystal layer.