TOUCH DISPLAY PANEL AND METHOD OF MANUFACTURING THE SAME

• US 20120038567A1
• Filed: 06/29/2011
• Published: 02/16/2012
• Est. Priority Date: 08/13/2010
• Status: Active Grant

• Current Assignee: Hydis Technology Company Limited (E Ink Holdings Incorporated)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Kyu-Young, JO, Gug-Rae, LEE, Youn-Gu, JUNG, Nam-Ok, LEE, Dae-Young
• Granted Patent: US 8,780,063 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A touch display panel may include a display unit and a touch unit. The display unit may include a first base substrate having a plurality of pixel electrodes, a second base substrate including a common electrode disposed on a first face of the second base substrate, and an electro optical layer disposed between the pixel electrodes and the common electrode. The first face faces the first base substrate. The touch unit includes a color filter layer including a plurality of color filters and a first electrode part including first electrodes disposed on a second face of the second base substrate, and a third base substrate including a second electrode part extended along a direction crossing the first electrodes. The first electrodes may be disposed on a boundary area of the color filters having different colors from each other, so that mixing of the colors is prevented.

Claims

1. A touch display panel, comprising:

a display unit comprising;

a first base substrate comprising a plurality of pixel electrodes;

a second base substrate comprising a common electrode disposed on a first face of the second base substrate, the first face facing the first base substrate; and

an electro optical layer disposed between the pixel electrodes and the common electrode; and

a touch unit comprising;

a color filter layer comprising a plurality of color filters;

a first electrode part comprising first electrodes disposed on a second face of the second base substrate, the first electrodes being located in an area corresponding to a boundary area of a first color filter and a second color filter, the second color filter having a different color than a color of the first color filter; and

a third base substrate comprising a second electrode part extended along a direction crossing the first electrodes.

2. The touch display panel of claim 1, wherein the color filter layer is disposed on the second face of the second base substrate, and the first electrode part is disposed on the color filter layer.

3. The touch display panel of claim 1, wherein the color filter layer is disposed on the third base substrate, and the second electrode part is disposed on the color filter layer.

4. The touch display panel of claim 3, wherein the color filter layer comprises a light hole.

5. The touch display panel of claim 4, wherein the touch unit further comprises a reflecting plate disposed on the second face of the second base substrate, the reflecting plate being located in an area corresponding to a location of the light hole, the reflecting plate comprising a metallic material that is substantially the same type of material as a material forming the first electrode part.

6. The touch display panel of claim 1, wherein the touch unit further comprises:

a first line part disposed on the second face of the second base substrate and electrically connected to the first electrode part, and

a second line part disposed on the third base substrate and electrically connected to the second electrode part.

7. The touch display panel of claim 6, wherein the first electrode part further comprises a first connecting electrode connecting ends of the first electrodes to each other, and

wherein the first line part is connected to the first connecting electrode.

8. The touch display panel of claim 7, wherein the first line part comprises a metallic material that is substantially the same type of material as a material forming the first electrode part.

9. The touch display panel of claim 8, wherein the first line part is thicker than the first electrode part.

10. The touch display panel of claim 1, wherein the electro optical layer comprises an electrophoretic ball.

11. A method of manufacturing a touch display panel, the method comprising:

forming a first substrate comprising a plurality of pixel electrodes formed on a first base substrate;

disposing a second base substrate on the first substrate, the second base substrate comprising a common electrode and an electro optical layer, the electro optical layer being formed on a first face of the second base substrate;

forming a color filter layer comprising a plurality of color filters on a second face of the second base substrate;

forming a first electrode part comprising a first electrode disposed on the second face of the second base substrate and a first line part electrically connected to the first electrode, the first electrode being located in an area corresponding to a boundary area of a first color filter and a second color filter, the second color filter having a different color than a color of the first color filter;

forming a third substrate comprising a second electrode part extended along a direction is crossing the first electrode and a second line part electrically connected to the second electrode part; and

combining the second base substrate with the third substrate such that the first electrode part faces the second electrode part.

12. The method of claim 11, wherein forming the first electrode part and the first line part further comprises:

forming a first recess part and a second recess part having different depths from each other on a printing substrate;

filling the first recess part and the second recess part of the printing substrate with a metallic material to form the first metal pattern and the second metal pattern, respectively;

transferring the first metal pattern and the second metal pattern on a blanket; and

transferring the first metal pattern and the second metal pattern from the blanket to the second face of the second base substrate to form the first electrode part and the first line part.

13. The method of claim 12, wherein forming the third substrate further comprises:

forming the second electrode part on the third substrate using a transparent conductive material; and

forming the second line part on the third base substrate comprising the second electrode s part using a metallic material.

14. The method of claim 11, wherein the color filter layer is formed by a printing method.

15. The method of claim 11, further comprising spreading a plurality of spacers on the second face of the second base substrate.

16. A method of manufacturing a touch display panel, the method comprising:

forming a first substrate comprising a plurality of pixel electrodes formed on a first base substrate;

disposing a second base substrate on the first substrate, the second base substrate comprising a common electrode and an electro optical layer, the electro optical layer being formed on a first face of the second base substrate;

forming a third base substrate comprising a second electrode part, a second line part electrically connected to the second electrode part, and a color filter layer comprising a plurality of color filters;

forming a first electrode part comprising a first electrode disposed on a second face of the second base substrate, a first line part electrically connected to the first electrode part and a reflecting plate, the first electrode being located in an area corresponding to a boundary area of a first color filter and a second color filter, the second color filter having a different color than a color of the first color filter, and the first electrode being extended along a direction crossing the second electrode part;

combining the second base substrate with the third substrate such that the first electrode part faces the second electrode part.

17. The method of claim 16, wherein forming the third substrate further comprises:

forming the color filter layer on the third base substrate by a printing method;

forming the second electrode part on the third base substrate using a transparent conductive material; and

forming the second line part on the third base substrate by a printing method.

18. The method of claim 17, wherein the color filter layer comprises a light hole corresponding to the reflecting plate.

19. The method of claim 17, wherein forming the first electrode part, the first line part, and the reflecting plate further comprises:

forming a first recess part, a second recess part, and a third recess part on a printing substrate, the first recess part and the third recess part having a different depth from the second recess part;

filling the first recess part, the second recess part, and the third recess part of the printing substrate with a metallic material to form a first metal pattern, a second metal pattern, and a third metal pattern, respectively;

transferring the first metal pattern, the second metal pattern, and the third metal pattern to a blanket; and

transferring the first metal pattern, the second metal pattern, and the third metal pattern from the blanket to the second face of the second base substrate to form the first electrode part, the first line part, and the reflecting plate.

20. The method of claim 16, further comprising forming a plurality of spacers on the second face of the second base substrate.

21. A touch display panel, comprising:

a display unit comprising a first substrate and at least a first portion of a second substrate, the display unit configured to display an image; and

a touch unit comprising a third substrate and at least a second portion of the second substrate, the touch unit configured to detect a touch position on the touch display panel,

wherein the second substrate is disposed between the first substrate and the third substrate.

22. The touch display panel of claim 21, wherein the display unit comprises a electro-optical layer disposed between the first substrate and the first portion of the second substrate.

23. The touch display panel of claim 22, wherein a common electrode is disposed on the first portion of the second substrate and a pixel electrode is disposed on the first substrate, and the electro-optical layer is disposed between the common electrode and the pixel electrode, the electro-optical layer comprising at least one electrophoretic ball.

24. The touch display panel of claim 23, wherein the touch unit comprises a color filter layer comprising at least one color filter, and wherein the second substrate is separated from the third substrate by a spacer.

25. The touch display panel of claim 24, wherein the color filter layer is disposed on the second portion of the second substrate, and a first electrode part is disposed on the color filter layer in a region corresponding to a boundary between a first color filter and a second color filter.

26. The touch display panel of claim 24, wherein the color filter layer is disposed on the third substrate, and a second electrode part is disposed on the color filter layer in a region corresponding to a boundary between a first color filter and a second color filter.

27. The touch display panel of claim 26, wherein the color filter layer comprises a light hole.

28. The touch display panel of claim 26, wherein the touch unit further comprises a reflecting plate disposed on the second portion of the second substrate, the reflecting plate being located in an area corresponding to a location of the light hole, the reflecting plate comprising a metallic material that is substantially the same type of material as a material forming a first electrode part disposed on the second portion of the second substrate.