IN-CELL OLED TOUCH DISPLAY PANEL STRUCTURE

• US 20140346493A1
• Filed: 08/12/2014
• Published: 11/27/2014
• Est. Priority Date: 03/13/2012
• Status: Active Grant

• Current Assignee: Superc-Touch Corporation
• Original Assignee: Superc-Touch Corporation
• Inventors: LEE, Hsiang-Yu
• Granted Patent: US 9,214,501 B2
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
• CPC Class Codes: H10K 50/865 comprising light absorbing layers, e.g. light-blocking layers
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens
• CPC Class Codes: H10K 59/8792 comprising light absorbing layers, e.g. black layers

Abstract

An in-cell OLED touch display panel structure includes an upper substrate, a lower substrate, an OLED layer configured between the upper and lower substrates, and a black matrix layer. The black matrix layer is disposed at one surface of the upper substrate that faces the OLED layer, and the black matrix layer is composed of a plurality of opaque conductor lines. The plurality of opaque conductor lines is divided into a first group of opaque conductor lines, a second group of opaque conductor lines, and a third group of opaque conductor lines. The second group of opaque conductor lines is formed with N mesh-like polygonal regions. The opaque conductor lines in any one of the polygonal regions are electrically connected together, while any two polygonal regions are not connected, so as to form a single-layered touch sensing pattern on the black matrix layer.

Claims

1. An in-cell OLED touch display panel structure, comprising:

an upper substrate;

a lower substrate parallel to the upper substrate;

an OLED layer configured between the upper substrate and the lower substrate;

a black matrix layer disposed at one surface of the upper substrate and facing the OLED layer, the black matrix layer being composed of a plurality of opaque conductor lines; and

a thin film transistor layer disposed at the surface of the lower substrate facing the OLED layer,

wherein the plurality of opaque conductor lines are divided into a first group of opaque conductor lines, a second group of opaque conductor lines, and a third group of opaque conductor lines, the second group of opaque conductor lines being formed with N mesh-like polygonal regions, where N is a positive integer, the opaque conductor lines in any one of the mesh-like polygonal regions being electrically connected together while any two mesh-like polygonal regions are not connected, so as to form a single-layered touch pattern on the black matrix layer.

2. The in-cell OLED touch display panel structure as claimed in claim 1, wherein the third group of opaque conductor lines is formed with N conductive traces, each of the N conductive traces being electrically connected to a corresponding mesh-like polygonal region, while any two conductive traces are not connected.

3. The in-cell OLED touch display panel structure as claimed in claim 2, wherein the first group of opaque conductor lines is not connected to the second group of opaque conductor lines and the third group of opaque conductor lines.

4. The in-cell OLED touch display panel structure as claimed in claim 3, wherein the plurality of opaque conductor lines of the black matrix layer is arranged in a first direction and a second direction.

5. The in-cell OLED touch display panel structure as claimed in claim 4, wherein the first direction is vertical to the second direction.

6. The in-cell OLED touch display panel structure as claimed in claim 5, wherein the mesh-like polygonal region has a shape of triangle, rectangle, square, rhombus, hexagonal, octagon or round.

7. The in-cell OLED touch display panel structure as claimed in claim 6, wherein the plurality of opaque conductor lines of the black matrix are made of conductive metal material or combination of opaque non-conductive material and conductive metal material.

8. The in-cell OLED touch display panel structure as claimed in claim 7, wherein the conductive metal material is selectively to be chromium, barium, aluminum, silver, copper, titanium, nickel, tantalum, cobalt, tungsten, magnesium, calcium, potassium, lithium, indium, their alloy, or combination of lithium fluoride, magnesium fluoride, lithium oxide .

9. The in-cell OLED touch display panel structure as claimed in claim 8, wherein the thin film transistor layer include K gate lines and L source lines for driving corresponding pixel driving transistor and pixel capacitor based on a display pixel signal and a display driving signal, so as to perform a display operation, where K and L are each a positive integer.

10. The in-cell OLED touch display panel structure as claimed in claim 9, wherein the K gate lines and the L source lines are disposed at positions corresponding to those of the plurality of opaque lines of the black matrix layer.

11. The in-cell OLED touch display panel structure as claimed in claim 10, further comprising:

a color filter layer disposed at one surface of the black matrix layer and facing the OLED layer; and

an over coating layer disposed on a surface of the color filter.

12. The in-cell OLED touch display panel structure as claimed in claim 11, further comprising:

a cathode layer disposed at one side of the over coating layer facing the OLED layer; and

an anode layer disposed at one side of the thin film transistor layer facing the OLED layer, the anode layer including a plurality of anode pixel electrodes, each of the anode pixel electrodes being connected to a source/drain of the pixel driving transistor of a corresponding pixel driving transistor.

13. The in-cell OLED touch display panel structure as claimed in claim 11, further comprising:

a cathode layer disposed at one side of the thin film transistor layer facing the OLED layer, the cathode layer including a plurality of cathode pixel electrodes, each of the cathode pixel electrodes being connected to a source/drain of the pixel driving transistor of a corresponding pixel driving transistor; and

an anode layer disposed at one side of the over coating layer facing the OLED layer.