IN-CELL OLED TOUCH DISPLAY PANEL STRUCTURE OF NARROW BORDER

• US 20150048346A1
• Filed: 08/08/2014
• Published: 02/19/2015
• Est. Priority Date: 08/16/2013
• Status: Active Grant

• Current Assignee: Superc-Touch Corporation
• Original Assignee: Superc-Touch Corporation
• Inventors: LEE, Hsiang-Yu
• Granted Patent: US 9,153,629 B2
• Time in Patent Office: Days
• US Class Current: 257/40
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133512 Light shielding layers, e.g. black matrix G02F1/136209 takes precedence
• 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 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• 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 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column 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 59/123 Connection of the pixel electrodes to the thin film transistors [TFT]
• CPC Class Codes: H10K 59/40 OLEDs integrated with touch screens

Abstract

An in-cell OLED touch panel structure of narrow border includes an upper substrate, a lower substrate, an OLED layer configured between the upper and lower substrates, a black matrix layer, a first sensing electrode layer, a second sensing electrode layer, and a thin film transistor layer. The black matrix layer is composed of a plurality of opaque lines. The first sensing electrode layer includes M first conductor line units and N connection lines. The second sensing electrode layer includes N second conductor line units. Each second conductor line unit makes use of a corresponding i-th connection line to be extended to one edge of the in-cell OLED touch panel structure. The M first conductor line units, the N connection lines, and the N second conductor line units are disposed at positions corresponding to those of the plurality of opaque lines of the black matrix layer.

Claims

1. An in-cell OLED touch panel structure of narrow border, comprising:

an upper substrate;

a lower substrate parallel to the upper substrate;

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

a black matrix layer arranged on one side of the upper substrate facing the OLED layer, the black matrix layer being composed of a plurality of opaque lines;

a first sensing electrode layer arranged on one side of the black matrix layer facing the OLED layer and including M first conductor line units and N connection lines arranged in a first direction for touch detection, where M and N are each a positive integer;

a second sensing electrode layer arranged on one side of the first sensing electrode layer facing the OLED layer and including N second conductor line units arranged in a second direction for touch detection, wherein each of the N second conductor line units makes use of a corresponding i-th connection line to be extended to one edge of the in-cell OLED touch panel structure, where i is a positive integer and 1≦

i≦

N; and

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

wherein the M first conductor line units, the N connection lines, and the N second conductor line units are disposed at positions corresponding to those of the plurality of opaque lines of the black matrix layer.

2. The in-cell OLED touch panel structure of narrow border as claimed in claim 1, wherein each of the M first conductor line units is extended to the same edge of the panel structure through a corresponding metal wire for being further connected to a flexible circuit board.

3. The in-cell OLED touch panel structure of narrow border as claimed in claim 2, wherein the N connection lines are made of conductive metal material.

4. The in-cell OLED touch panel structure of narrow border as claimed in claim 3, wherein each of the M first conductor line units is composed of plural metal sensing lines, and each of the N second conductor line units is composed of plural metal sensing lines.

5. The in-cell OLED touch panel structure of narrow border as claimed in claim 4, wherein the plural metal sensing lines of each of the M first conductor line units form a quadrilateral region, and the plural metal sensing lines of each of the N second conductor line units form a quadrilateral region, such that the metal sensing lines in each quadrilateral region are electrically connected together, while any two of the quadrilateral regions are not connected with each other.

6. The in-cell OLED touch panel structure of narrow border as claimed in claim 5, wherein the first direction is substantially perpendicular to the second direction.

7. The in-cell OLED touch panel structure of narrow border as claimed in claim 6, wherein each of the N connection lines is disposed between two first conductor line units.

8. The in-cell OLED touch panel structure of narrow border as claimed in claim 7, wherein the quadrilateral region has a shape of rectangle or square.

9. The in-cell OLED touch panel structure of narrow border as claimed in claim 8, wherein the metal sensing lines in each quadrilateral region formed by the plural metal sensing lines of each of the M first conductor line units and the N second conductor line units are made of conductive metal material or alloy material.

10. The in-cell OLED touch panel structure of narrow border as claimed in claim 9, wherein the conductive metal material is chromium, barium, aluminum, silver, copper, titanium, nickel, tantalum, cobalt, tungsten, magnesium, calcium, potassium, lithium, indium, their alloy, or a mixture of LiF, MgF2 or Li2O.

11. The in-cell OLED touch panel structure of narrow border as claimed in claim 10, wherein the thin film transistor layer further includes K gate lines and L source lines for driving corresponding pixel 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.

12. The in-cell OLED touch display panel structure of narrow border as claimed in claim 11, 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.

13. The in-cell OLED touch display panel structure of narrow border as claimed in claim 10, further comprising:

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

a first insulation layer disposed on a surface of the color filter.

14. The in-cell OLED touch display panel structure of narrow border as claimed in claim 13, further comprising:

a cathode layer disposed at one side of the second sensing electrode 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.

15. The in-cell OLED touch display panel structure of narrow border as claimed in claim 13, 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 second sensing electrode layer facing the OLED layer.