Substrate for a display apparatus

• US 20050146658A1
• Filed: 01/06/2005
• Published: 07/07/2005
• Est. Priority Date: 01/06/2004
• Status: Abandoned Application

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Cha, Sung-Eun, Kim, Sang-Woo, Kim, Jae-Hyun, Lee, Jae-Young, Park, Won-Sang, Lim, Jae-Ik
• Application Number:
  US11/031,555
• Publication Number:
  US 20050146658A1
• Time in Patent Office: Days
• US Class Current: 349/114
• CPC Class Codes: G02F 1/133371 Cells with varying thickness of the liquid crystal layer
• CPC Class Codes: G02F 1/133555 Transflectors

Abstract

A substrate for a display apparatus includes a plate, a switching element, an insulating layer, and a partition wall. The plate has a reflection region on which a light that is provided from an exterior to the substrate is reflected and a transmission region through which a light generated from a backlight assembly passes. The switching element is on the plate. The insulating layer is on the plate having the switching element. The transmission region of the insulating layer is recessed when compared to the reflection region of the insulating layer. The insulating layer has a contact hole through which a first electrode of the switching element is partially exposed. The partition wall divides the transmission region into a plurality of transmission portions. Advantageously, an image display quality of the display apparatus is improved, and manufacturing cost is decreased.

Claims

1. A substrate for a display apparatus, comprising:

a plate having a reflection region on which a light may reflect and a transmission region through which a light may pass;

a switching element formed on the plate;

an insulating layer formed over the switching element; and

a partition wall that divides the transmission region into a plurality of transmission portions.

2. The substrate of claim 1, wherein the reflected light is provided from an exterior source.

3. The substrate of claim 1, wherein the transmitted light is provided from a backlight assembly.

4. The substrate of claim 1, wherein the transmission region is adjacent to the reflection region.

5. The substrate of claim 1, wherein a transmission region of the insulating layer is recessed relative to a reflection region of the insulating layer.

6. The substrate of claim 5, wherein the insulating layer includes a contact hole though which a first electrode of the switching element is partially exposed.

7. The substrate of claim 6, further comprising a pixel electrode on the insulating layer such that the pixel electrode is electrically coupled to the first electrode of the switching element.

8. The substrate of claim 1, wherein the insulating layer includes a contact hole through which a first electrode of the switching element is partially exposed and an opening through which a first pixel electrode portion is partially exposed.

9. The substrate of claim 8, further comprising a second pixel electrode portion electrically coupled to the first electrode of the switching element and the first pixel electrode portion.

10. The substrate of claim 9, wherein the partition wall is on the first pixel electrode portion.

11. A display apparatus, comprising:

a lower substrate including;

a first plate having a reflection region on which a light may reflect and a transmission region through which a light may pass;

a switching element formed on the plate;

an insulating layer formed over the switching element; and

a partition wall that divides the transmission region into a plurality of transmission portions; and

an upper substrate including a second plate and a common electrode on the second plate, the common electrode having at least one pattern corresponding to the plurality of transmission portions.

12. The display apparatus of claim 11, wherein the pattern includes a shape substantially the same as the shape of each of the transmission portions.

13. The display apparatus of claim 12, wherein the shape is selected from the group consisting of a circle, an ellipse, and a polygon.

14. The display apparatus of claim 11, further comprising a liquid crystal layer between the lower substrate and the upper substrate, and wherein the liquid crystal layer has a vertical alignment mode.

15. The display apparatus of claim 11, wherein a transmission region of the insulating layer is recessed relative to a reflection region of the insulating layer.

16. The display apparatus of claim 15, wherein the insulating layer includes a contact hole though which a first electrode of the switching element is partially exposed.

17. The display apparatus of claim 16, further comprising a pixel electrode on the insulating layer such that the pixel electrode is electrically coupled to the first electrode of the switching element.

18. A method of manufacturing a substrate for a display apparatus, the method comprising:

forming a switching element on a plate having a reflection region on which a light may reflect and a transmission region through which a light may pass;

forming an insulating layer over the switching element; and

dividing the transmission region into a plurality of transmission portions.

19. The method of claim 18, wherein the transmission region is divided by a partition wall.

20. The method of claim 19, wherein the insulating layer and the partition wall are formed from a common layer.

21. The method of claim 18, further comprising forming a first pixel electrode part on the plate having the switching element.

22. The method of claim 21, wherein the insulating layer and the partition wall are formed by:

coating an insulating material on the plate having the switching element and the first pixel electrode part;

forming a reticle including a pattern through which the first electrode of the switching element and the first pixel electrode are partially exposed and a slit pattern corresponding to the partition wall; and

performing a photo process on the coating insulating material using the reticle to form the insulating layer and the partition wall.

23. The method of claim 18, further comprising providing an opening in the insulating layer through which a first electrode of the switching element is partially exposed.

24. The method of claim 23, further comprising providing an opening in the insulating layer through which the first pixel electrode part is partially exposed.

25. The method of claim 24, further comprising forming a second pixel electrode part on the insulating layer, the second pixel electrode part being electrically coupled to the first electrode and the first pixel electrode part.

26. A color filter substrate, comprising:

a plate including a display region and a peripheral region that surrounds the display region;

a color filter on the plate corresponding to the display region, the color filter having a recess for a multi-domain in the display region; and

a common electrode on the peripheral region, the color filter and an inner surface of the recess to form a distorted electric field adjacent to the recess.

27. The color filter substrate of claim 26, wherein the color filter has a plurality of recesses for the multi-domain.

28. The color filter substrate of claim 26, further comprising an insulating layer on the color filter to protect the color filter from an impurity or an impact that is provided from an exterior source.

29. The color filter substrate of claim 28, wherein the insulating layer has an auxiliary recess for the multi-domain, and the auxiliary recess for the multi-domain is in the display region.

30. The color filter substrate of claim 26, wherein a depth of the recess for the multi-domain is substantially equal to a thickness of the color filter or less than a thickness of the color filter.

31. The color filter substrate of claim 26, wherein the recess for the multi-domain is on a central line of the display region.

32. A liquid crystal display apparatus, comprising:

a second plate including a display region and a peripheral region that surrounds the display region;

a color filter on the second plate corresponding to the display region, the color filter having a recess for a multi-domain in the display region;

a common electrode on the peripheral region of the second plate, the color filter and an inner surface of the recess to form a distorted electric field adjacent to the recess;

a first plate including a pixel region corresponding to the display region and a switching element in the pixel region;

a pixel electrode in the pixel region of the first plate, the pixel electrode being electrically connected to an electrode of the switching element; and

a liquid crystal layer between the pixel electrode and the common electrode.

33. The liquid crystal display apparatus of claim 32, wherein the pixel region includes a reflection region from which a light that is provided from an exterior to the second plate is reflected and a transmission region adjacent to the reflection region, the liquid crystal display apparatus further comprising an insulating layer on the first plate having the switching element so that the transmission region of the insulating layer is recessed when compared to the reflection region of the insulating layer, and the insulating layer has a contact hole through which a first electrode of the switching element is partially exposed.

34. The liquid crystal display apparatus of claim 33, further comprising a partition wall in the transmission region to divide the transmission region into a plurality of transmission portions.

35. The liquid crystal display apparatus of claim 32, further comprising a protrusion for the multi-domain between the first plate and the pixel electrode to form the multi-domain in the liquid crystal layer.

36. The liquid crystal display apparatus of claim 32, wherein the pixel electrode comprises a plurality of pixel electrode parts and a connecting portion that connects the pixel electrodes to one another.

37. The liquid crystal display apparatus of claim 32, wherein the pixel region comprises a transmission region through which a light generated from a backlight passes and a reflection region from which a light that is provided from an exterior to the second plate is reflected, and the pixel electrode includes a first pixel electrode part in the transmission region and a second pixel electrode part in the reflection region.

38. The liquid crystal display apparatus of claim 37, wherein the first pixel electrode part comprises a first transparent electrode portion, a second transparent electrode portion adjacent to the first transparent electrode portion, a first connecting portion that electrically connects the first transparent electrode portion to the second transparent electrode portion, and a second connecting portion that electrically connects the second transparent electrode portion to the second pixel electrode part.