DISPLAY DEVICE AND MANUFACTURING METHOD OF THE SAME

• US 20080239214A1
• Filed: 11/13/2007
• Published: 10/02/2008
• Est. Priority Date: 03/27/2007
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: LEE, Sang-Hun, KIM, Gwan-Soo, KIM, Byoung-Joo, HUH, Chul
• Granted Patent: US 8,477,251 B2
• Time in Patent Office: Days
• US Class Current: 349/106
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/1362 Active matrix addressed cells G02F1/134336, G02F1/134363 take precedence
• CPC Class Codes: G03F 1/00 Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
• CPC Class Codes: G03F 7/0005 Production of optical devices or components in so far as characterised by the lithographic processes or materials used therefor
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/047 using sets of wires, e.g. crossed wires

Abstract

A display device includes a first substrate including pixels and sensing electrodes corresponding with the pixels, and a second substrate facing the first substrate. The second substrate includes an organic layer with a black matrix dividing the pixels and a sensing spacer opposite to the sensing electrode. The organic layer including the black matrix and the sensing spacer may be formed in a single process using organic photoresist material. A mask includes a light-intercepting pattern including slits to block a portion of ultraviolet light emitted towards a photoresist layer to form the black matrix. The mask also includes a pattern to block ultraviolet light in a region corresponding to the sensing spacer if a negative type photoresist material is used, or the mask does not block ultraviolet light in the region corresponding to the sensing spacer if a positive type photoresist material is used.

Claims

1. A display device, comprising:

a first substrate comprising a plurality of pixels, a first pixel of the plurality of pixels comprising a sensing electrode; and

a second substrate facing the first substrate and comprising an organic layer, the organic layer comprising a black matrix dividing the pixels and a sensing spacer opposite to the sensing electrode.

2. The display device of claim 1, wherein the second substrate further comprises an insulating substrate on which the black matrix and the sensing spacer are arranged, and the sensing spacer contacts the insulating substrate.

3. The display device according to claim 1, wherein the black matrix and the sensing spacer are provided as a single body.

4. The display device of claim 1, wherein the second substrate further comprises:

a color filter arranged between portions of the black matrix; and

a transparent electrode layer comprising a common electrode arranged on the black matrix and the color filter, and a contact electrode arranged on the sensing spacer.

5. The display device of claim 4, wherein the transparent electrode layer receives a common voltage.

6. The display device of claim 4, wherein the second substrate further comprises a cell-gap spacer arranged on the common electrode.

7. The display device of claim 6, wherein the cell-gap spacer has a height greater than a height of the sensing spacer, and a height difference between the sensing spacer and the cell-gap spacer is about 0.2 μ

m to about 1 μ

m, the height difference being measured as a distance from a surface of the first substrate.

8. A display device, comprising:

a first substrate comprising a plurality of pixels, a first pixel comprising a sensing electrode; and

a second substrate facing the first substrate and comprising an organic layer comprising a black matrix dividing the pixels and a sensing spacer opposite to the sensing electrode, the sensing spacer formed simultaneously with the black matrix.

9. A method for manufacturing a display device, comprising:

forming a photoresist layer on a first insulating substrate;

exposing and developing the photoresist layer to form a black matrix and a sensing spacer;

forming a color filter between portions of the black matrix;

forming a transparent electrode layer, the transparent electrode layer comprising a common electrode formed on the black matrix and the color filter, and a contact electrode formed on the sensing spacer; and

forming a cell-gap spacer on the common electrode.

10. The method of claim 9, wherein a mask used in the exposing includes a light-intercepting pattern corresponding to the black matrix, the light-intercepting pattern comprising a slit to block a portion of ultraviolet light.

11. The method of claim 9, wherein a mask used in the exposing includes a semitransparent layer corresponding to the black matrix.

12. The method of claim 9, wherein the photoresist layer is a negative type photoresist material.

13. The method of claim 12, wherein a mask used in the exposing includes a light-intercepting pattern to block ultraviolet light in a region corresponding to the color filter.

14. The method of claim 12, wherein a mask used in the exposing does not block ultraviolet light in a region corresponding to the sensing spacer.

15. The method of claim 9, wherein the photoresist layer is a positive type photoresist material.

16. The method of claim 15, wherein a mask used in the exposing does not block ultraviolet light in a region corresponding to the color filter.

17. The method of claim 15, wherein a mask used in the exposing includes a light-intercepting pattern to block ultraviolet light in a region corresponding to the sensing spacer.

18. The method of claim 9, further comprising:

forming a sensing electrode on a second insulating substrate;

assembling the first insulating substrate and the second insulating substrate, the sensing electrode corresponding with the sensing spacer in the assembled first insulating substrate and second insulating substrate; and

forming a liquid crystal layer between the first insulating substrate and the second insulating substrate.