TWI552062B - In-cell oled touch panel structure with high touch position resolution - Google Patents

Description

In-cell organic light emitting diode touch display device with increased touch position resolution

The present invention relates to the technical field of a touch panel, and more particularly to an in-cell organic light emitting diode touch display device that increases the resolution of a touch position.

In recent years, the flat panel display industry has developed rapidly, and many products have been proposed in order to pursue lighter weight, thinner thickness, smaller size and more detailed image quality. And several flat panel displays have been developed to replace the traditional cathode ray tube display (CRT). Conventional flat panel displays include a liquid crystal display (LCD), a plasma display panel (PDP), an Organic Light Emitting Diode (OLED) display, and a field emission display (Field Emission Display, FED), and Vacuum Fluorescence Display (VFD).

Among a wide variety of flat panel displays, Organic Light Emitting Diode (OLED) display technology is an emerging new flat display technology. OLED was published in 1987 by Eastman Kodak Co.. It has a thin thickness, light weight, self-illumination, low drive Features such as voltage, high efficiency, high contrast, high color saturation, fast response, and flexibility are considered to be quite promising display technologies after TFT-LCD. In recent years, the demand for high-quality full-color flat-panel displays in mobile communications, digital products and digital televisions has increased rapidly. The OLED display not only has the advantages of thin, power-saving and full-color display of the LCD, but also has a wider viewing angle, active illumination, and faster response than the LCD.

The organic light emitting diode (OLED) display comprises a corresponding electrode layer, an organic light emitting diode layer, a pixel electrode layer, a thin film transistor layer, a reflective layer, a lower substrate, and an upper substrate or an encapsulation layer. The layer, wherein the organic light emitting diode layer further comprises a hole transporting layer (HTL), an emitting layer, and an electron transporting layer (ETL).

The principle of illuminating the organic light-emitting diode is to inject electrons and holes from the corresponding electrode layer and the pixel electrode layer by the action of an applied electric field, and the hole passes through the hole transmission sub-layer and the electrons pass through the electron transport sub-layer. Enter a luminescent layer with fluorescent properties. Then, the internal excitation generates photons, and the excited photons are released and returned to the ground state. The released energy generates different colors of light according to different luminescent materials, which creates the luminescence phenomenon of the OLED.

A conventional organic light emitting diode (OLED) display has a cathode corresponding electrode layer under the upper substrate, the corresponding electrode layer can isolate noise from the upper substrate and receive the current of the pixel anode of the pixel electrode layer. To control the illumination of the luminescent layer. In a conventional organic light emitting diode (OLED) display, the pixel electrode layer is preferably an anode layer, and the corresponding electrode layer is It is a cathode layer.

The touch-sensitive flat panel display directly overlaps the touch panel and the flat display, because the laminated touch panel is a transparent panel, so that the image can penetrate the display image of the touch panel stacked thereon. Then use the touch panel as the medium or interface for input. However, this conventional technique is required to increase the total weight of a touch panel when superimposing, so that the weight of the flat display is greatly increased, which does not meet the requirements of the current market for the lightness and thinness of the display. When the touch panel and the flat display are directly stacked, the thickness of the touch panel itself is increased in thickness, the light transmittance is reduced, the reflectance and the haze are increased, and the quality of the screen display is greatly reduced.

In response to the aforementioned shortcomings, the touch panel display adopts an embedded touch technology. The main development direction of embedded touch technology is mainly In-Cell technology. In-Cell Touch technology integrates the touch components into the display panel, so that the display panel itself has a touch function, so there is no need to separately attach or assemble the touch panel, so the technology is usually Developed by the display panel factory.

In terms of sensing method, the capacitive touch panel is a capacitance change caused by the electrostatic combination between the arranged transparent electrodes and the human body, and is converted into a current or a voltage to detect its coordinates. Figure 1 is a schematic illustration of a conventional single layer transparent electrode structure. The transparent electrode 11 is configured to detect a change in capacitance caused by electrostatic coupling of the transparent electrode 11 and the finger, and is transmitted by the trace 12. The single layer transparent electrode structure of Figure 1 has the advantage of saving material costs and simplifying the manufacturing process. However, the single-layer transparent electrode structure of Figure 1 has the disadvantage of being complicated by the traces 12, and also because Line 12 occupies a portion of the area, resulting in poor linearity. The area occupied by the trace 12 will form a dead area, that is, the touch of a finger cannot be effectively detected in the dead zone. At the same time, due to the corresponding electrode layer (cathode layer) of the organic light emitting diode display, the touch signal is masked by the corresponding electrode layer (cathode layer), which makes the In-Cell embedded touch technology difficult to apply. On an organic light-emitting diode display. Therefore, there is still room for improvement in the structure of the conventional organic light emitting diode liquid crystal display panel.

The object of the present invention is to provide an in-cell OLED touch display device capable of increasing touch position resolution, which can apply In-Cell embedded touch technology to an organic light-emitting diode display. At the same time, the touch position can be detected more accurately than the prior art.

According to a feature of the present invention, the present invention provides an in-cell OLED touch display device that increases touch position resolution, and includes an upper substrate, a lower substrate, a thin film transistor layer, and a pixel electrode layer. a sensing electrode layer and a corresponding electrode layer. The lower substrate is disposed in parallel with the upper substrate, and an organic light-emitting display material layer is interposed therebetween. The thin film transistor layer is disposed on a surface of the lower substrate facing the display material layer, and the thin film transistor layer comprises a plurality of thin film transistors and a plurality of gate driving lines and a plurality of data driving lines. The pixel electrode layer comprises a plurality of pixel electrodes disposed between the thin film transistor layer and the display material layer, and each of the pixel electrodes is respectively connected to a source/drain of a thin film transistor. The sensing electrode layer is implanted between the lower substrate and the display material layer, and includes a plurality of Touch sensing electrodes. The corresponding electrode layer implants a plurality of openings in a region that is not corresponding to the plurality of pixel electrodes, so that the power line passes through.

According to another feature of the present invention, the present invention provides an in-cell OLED touch display device that increases touch position resolution, and includes an encapsulation layer, a lower substrate, a thin film transistor layer, and a pixel electrode. a layer, a sensing electrode layer, and a corresponding electrode layer. The lower substrate is disposed in parallel with the encapsulation layer, and an organic light-emitting display material layer is interposed therebetween. The thin film transistor layer is disposed on a surface of the lower substrate facing the display material layer, and the thin film transistor layer comprises a plurality of thin film transistors and a plurality of gate driving lines and a plurality of data driving lines. The pixel electrode layer comprises a plurality of pixel electrodes disposed between the thin film transistor layer and the display material layer, and each of the pixel electrodes is respectively connected to a source/drain of a thin film transistor. The sensing electrode layer is implanted between the lower substrate and the display material layer, and includes a plurality of touch sensing electrodes. The corresponding electrode layer implants a plurality of openings in a region that is not corresponding to the plurality of pixel electrodes, so that the power line passes through.

11‧‧‧Transparent electrode

12‧‧‧Wiring

200‧‧‧In-cell organic light-emitting diode touch display device with increased touch position resolution

210‧‧‧Upper substrate

220‧‧‧lower substrate

230‧‧‧Display material layer

240‧‧‧film transistor layer

250‧‧‧pixel electrode layer

260‧‧‧Induction electrode layer

270‧‧‧corresponding electrode layer

280‧‧‧Lighting layer

290‧‧‧Color filter layer

300‧‧ ‧ protective layer

241‧‧‧ pixel drive circuit

2411‧‧‧ gate

2413‧‧‧汲/source

2415‧‧‧Source/Bungee

251‧‧‧Anode element electrode

271‧‧‧Opening

261‧‧‧Amplifier with gain greater than zero

263‧‧‧ Impedance

231‧‧‧ hole transmission sublayer

233‧‧‧Lighting layer

235‧‧‧Electronic transmission sublayer

31-1~31-N‧‧‧ Conductive metal grid

310, 320‧‧‧ Conductive wire

32-1~32-N‧‧‧Wiring

410‧‧‧Touch grounding

420‧‧‧Power grounding

450‧‧‧dotted area

510‧‧‧Selection switch group

520‧‧‧Capacitance detection circuit

550‧‧‧ Grounding impedance

700,800,900,1000,1100,1200,1300‧‧‧In-cell organic light-emitting diode touch display device

670‧‧‧pixel electrode layer

650‧‧‧corresponding electrode layer

671‧‧‧ cathode pixel electrode

630‧‧‧Display layer

631‧‧‧ hole transmission sublayer

635‧‧‧Electronic transmission sublayer

710‧‧ ‧ gate line sublayer

720‧‧‧ data line sublayer

933-1‧‧‧Red light emitting layer

933-2‧‧‧Blue light layer

933-3‧‧‧Green light layer

A‧‧‧ ellipse

1010‧‧‧Encapsulation layer

Figure 1 is a schematic illustration of a conventional single layer transparent electrode structure.

2 is a schematic diagram of a stacking of an in-cell OLED touch display device with increased touch position resolution.

Figure 3 is a schematic illustration of a sensing electrode layer of the present invention.

4A is a perspective view showing the position of the conductive metal wire and the opening of the present invention.

4B is a schematic view showing an embodiment of a corresponding electrode opening of the present invention.

FIG. 5 is an equivalent circuit diagram of the in-cell OLED touch display device with the improved touch position resolution capability of the present invention.

Fig. 6 is a schematic view showing the operation of the selection switch group of the present invention.

FIG. 7 is another stacked diagram of an in-cell OLED touch display device with increased touch position resolution.

FIG. 8 is another schematic diagram of a stacked layer of an in-cell OLED touch display device with improved touch position resolution.

FIG. 9 is a stacked schematic diagram of an in-cell OLED touch display device with increased touch position resolution capability according to the present invention.

FIG. 10 is another stacked diagram of an in-cell OLED touch display device with increased touch position resolution.

FIG. 11 is another stacked diagram of an in-cell OLED touch display device with increased touch position resolution.

FIG. 12 is another stacked diagram of an in-cell OLED touch display device with increased touch position resolution.

FIG. 13 is another stacked diagram of an in-cell OLED touch display device with increased touch position resolution.

2 is a stacked diagram of an in-cell OLED touch display device 200 with increased touch position resolution. The in-cell OLED touch display device 200 includes an upper substrate 210, a lower substrate 220, a display material layer 230, a thin film transistor layer 240, and a pixel electrode layer 250. a sensing electrode layer 260, a corresponding electrode layer 270, a light shielding layer 280, a color filter layer 290, and a protective layer 300. In FIG. 2, the pixel electrode layer 250 is an anode layer, and the corresponding electrode layer 270 is a cathode layer.

The upper substrate 210 and the lower substrate 220 are preferably a glass substrate or a polymer film substrate. The upper substrate 210 and the lower substrate 220 are disposed in parallel with each other to sandwich the display material layer 230 between the two substrates 110 and 120. The display material layer 230 is an organic light-emitting display material layer.

The thin film transistor layer 240 is disposed on a surface of the lower substrate 220 facing the display material layer 230. The thin film transistor layer 240 includes a plurality of pixel driving circuits 241 and a plurality of gate driving lines (not shown) and plural Strip data drive line (not shown). Each of the pixel driving circuits 241 corresponds to a pixel, and drives a corresponding pixel driving circuit 241 according to a display pixel signal and a display driving signal to perform a display operation. The plurality of gate drive lines and the plurality of source drive lines define a plurality of pixel regions, each pixel region corresponding to a light transmissive block.

According to the design of the pixel driving circuit 241, for example, the 2T1C is designed as a pixel driving circuit by 2 thin film transistors and 1 storage capacitor, and the 6T2C is designed as a pixel driving circuit by 6 thin film transistors and 2 storage capacitors. The gate 2411 of at least one thin film transistor of the pixel driving circuit 241 is connected to a gate driving line. Depending on the design of the driving circuit, at least one thin film transistor 汲/source 2413 is connected to a data driving line in the control circuit. A source/drain 2415 of at least one thin film transistor in the pixel driving circuit 241 is connected to a corresponding anode pixel electrode 251 in the pixel electrode layer 250. In FIG. 2, the pixel electrode 251 is an anode pixel electrode.

The pixel electrode layer 250 includes a plurality of pixel electrodes 251 interposed between the thin film transistor layer 240 and the display material layer 230. Each of the pixel electrodes 251 is respectively connected to a source of a thin film transistor. Extreme 2415.

The sensing electrode layer 260 is disposed between the lower substrate 220 and the display material layer 230, and includes a plurality of touch sensing electrodes (not shown).

The corresponding electrode layer 270 implants a plurality of openings 271 in a region that is not corresponding to the plurality of pixel electrodes 251, so that the power lines pass through.

The black matrix 280 is located on the surface of the first substrate 210 facing the organic light-emitting display material layer 230. As shown in FIG. 2, the light-shielding layer 280 is composed of a plurality of light-shielding lines 281. The plurality of light shielding lines 281 are disposed in a first direction (X-axis direction) and a second direction (Y-axis direction) to form a plurality of light-transmissive blocks. The plurality of shading lines 281 are made of a black insulating material. The plurality of shading lines 281 are disposed according to the relative positions of the gate driving lines and the source driving lines of the thin film transistor layer 280. The first direction and the second direction are perpendicular to each other, so the light shielding layer 280 is also referred to as a black matrix.

The color filter layer 290 is located on a side of the light shielding layer 280 facing the display material layer 230. The protective layer 300 is located on a side of the light shielding layer 280 facing the display material layer 230.

The display material layer 230 includes a hole transporting layer (HTL) 231, an emission layer 233, and an electron transporting layer (ETL) 235. The display layer 230 preferably produces white light and is filtered using the color filter 290 to produce three primary colors of red, blue, and green.

3 is a schematic diagram of a sensing electrode layer 260 of the present invention. As shown in FIG. 2 and FIG. 3 , the sensing electrode layer 260 is implanted between the lower substrate 220 and the display material layer 230 . The sensing electrode layer 260 includes a plurality of touch sensing electrodes (S1, S2, S3, ..., S _N ). Each touch sensing electrode (S1, S2, S3, ..., S _N ) corresponds to a plurality of pixel electrodes 251, and each touch sensing electrode (S1, S2, S3, ..., S) At least one opening 271 is implanted on the corresponding electrode layer 270 corresponding to _N ).

The plurality of touch sensing electrodes (S1, S2, S3, ..., S _N ) may be polygonal, circular, elliptical, star, wedge, radial, triangular, pentagon, hexagonal, octagonal, Rectangular or square. The plurality of touch sensing electrodes (S1, S2, S3, ..., S _N ) are formed by a grid of conductive metal lines. The conductive metal wires forming the conductive metal grid of the plurality of touch sensing electrodes (S1, S2, S3, ..., S _N ) are implanted in a plurality of openings 271 of the corresponding electrode layer 270. Location.

The conductive metal wire is chromium, bismuth, aluminum, silver, copper, titanium, nickel, bismuth, cobalt, tungsten, magnesium (Mg), calcium (Ca), potassium (K), lithium (Li), indium (In), Zinc, tin, alloy, alloy of the above materials or lithium fluoride (LiF), magnesium fluoride (MgF2), and lithium oxide (Li2O) combined with aluminum (Al).

As shown in FIG. 3, in the sensing electrode layer 260, each of the plurality of touch sensing electrodes (S1, S2, S3, ..., S _N ) has a conductive metal grid 31-1~31-N The plurality of conductive metal wires 310 are connected via a conductive metal wire 320 to transmit the touch sensing electrodes (S1, S2, S3, ..., S _N ) The electrical signal sensed.

As shown in FIG. 3, the plurality of strips in the sensing electrode layer 260 The conductive metal lines 310, 320 are disposed in the first direction (X) and the second direction (Y). Wherein the first direction is perpendicular to the second direction. The plurality of conductive metal lines 310, 320 are divided into a first set of conductive metal lines 310 and a second set of conductive metal lines 320. The first set of conductive metal lines 310 form N polygonal conductive metal grids 31- 1~31-N, where N is a natural number. The conductive metal wires in each of the polygonal conductive metal grids 31-1 to 31-N are electrically connected together, and there is no between any two polygonal conductive metal grids 31-1 to 31-N. The connection is such that a single-layer inductive touch pattern structure is formed on the sensing electrode layer 260.

In this embodiment, the plurality of touch sensing electrodes (S1, S2, S3, ..., S _N ) are respectively composed of the N polygonal conductive metal grids 31-1 to 31-N. The N polygonal conductive metal grids 31-1~31-N are exemplified by a rectangle, and the positions of the plurality of conductive metal lines 310 and 320 are implanted in a plurality of openings 271 of the corresponding electrode layer 270. Relative position. Since the present invention implants a plurality of openings 271 at appropriate positions of the corresponding electrode layer 270, the corresponding electrode layer 270 of the present invention does not shield the touch signals as in the conventional electrode layer, so the present technology can -Cell embedded touch technology is applied to organic light emitting diode (OLED) displays.

In other embodiments, the conductive metal lines 310 and 320 are implanted at a plurality of gate drive lines and a plurality of data drive lines, wherein the gate drive lines and the data drive lines are familiar with the flat panel display technology. Know the person, so no longer detailed.

The second group of sensing conductor lines 320 form N traces 32-1~32-N, and each of the N traces has a corresponding polygonal type The conductive metal grids 31-1~31-N are electrically connected, and each of the traces 32-1~32-N is not connected.

As shown in FIG. 2, the in-cell OLED touch display device 200 for increasing the touch position resolution further includes at least one amplifier 261 having a gain greater than zero, and the amplifier 261 is electrically connected to the sensing electrode layer 260. Between the corresponding electrode layer 270. An impedance 263 can be disposed between the output of the amplifier 261 and the corresponding electrode layer 270. The impedance 263 is preferably a capacitor to block the DC component of the touch signal from flowing to the corresponding electrode layer 270.

The in-cell OLED touch display device 200 further includes a selection switch group 510 and a capacitance detecting circuit 520 shown in FIG. The selection switch group 510 sequentially connects the touch signals on the selected at least one touch sensing electrode to the amplifier 261 having a gain greater than zero, and is processed by the amplifier 261 and output to the corresponding electrode layer 270.

4A is a perspective view showing the position of the conductive metal wire and the opening of the present invention. It is an enlarged view of the ellipse A in FIG. As shown in FIG. 4A, the positions of the plurality of conductive metal lines 310, 320 are implanted at opposite positions of the plurality of openings 271 of the corresponding electrode layer 270. Since the corresponding electrode layer 270 is used to receive the current from the pixel electrode 251, the opening 271 cannot be disposed at the corresponding electrode layer 270 with respect to the pixel electrode 251. As shown in FIG. 4A, the dotted line region 450 is opposite to the pixel electrode 251, so the opening 271 cannot be provided in the broken line region 450. At least one opening 271 is disposed on the corresponding electrode layer 270 corresponding to each touch sensing electrode. In order to increase the power line between the finger and the touch sensing electrodes S1, S2, S3, ..., S _N , as shown in FIG. 4A , a plurality of openings 271 may be provided in a region avoiding the pixel electrode 251 . 4B is a schematic view showing an embodiment of the corresponding electrode opening of the present invention, which utilizes the difference in height of the insulating layer to peel off the corresponding electrode/cathode layer, thereby creating a cracked hole 271. This embodiment can obtain a larger continuous hole 271. To facilitate more power line penetration and simplify the process.

FIG. 5 is an equivalent circuit diagram of the in-cell OLED touch display device 200 with the improved touch position resolution capability of the present invention. As shown in FIG. 5, the gain of the amplifier 261 is preferably 1, and the corresponding electrode layer 270 is coupled to a power ground 420 via a ground impedance 550. The power ground 420 to which the corresponding electrode layer 270 is coupled is different from the touch ground 410 to which the sensing electrode layer 260 is coupled. Since the area of the corresponding electrode layer 270 is large, a capacitance C _CG exists between the corresponding electrode layer 270 and the touch ground 410. FIG. 6 is a schematic diagram of the operation of the selection switch group 510 of the present invention. The selection switch group 510 is connected to the plurality of touch sensing electrodes (S1, S2, S3, ..., S _N ) and a capacitance detecting circuit 520. The selection switch group 510 sequentially connects the touch signals on the selected at least one touch sensing electrode to the amplifier 261 having a gain greater than zero, and is processed by the amplifier 261 and output to the corresponding electrode layer 270.

As shown in FIG. 5 and FIG. 6 , the selection switch group 510 cross-connects the touch signal on the selected touch sensing electrode S1 to the amplifier 261 having a gain greater than zero, and is processed by the amplifier 261 and output to the corresponding electrode layer 270. . The equivalent circuit of FIG. 5 is viewed by the touch ground 410. Since the ground impedance 550 is coupled to a power ground 420, it is not seen in the equivalent circuit. The gain G of the amplifier 261 is preferably one; when the gain is one, the potential difference between the corresponding electrode layer 270 and the selected touch sensing electrode S1 is zero, that is, the potentials of the two are synchronously fluctuating and at the same potential. The capacitive effect is equivalent to zero, C _CS1 =0.

In the above, when a finger touches the touch sensing electrode S1, the capacitance (C _CS1 ) between the touch sensing electrode S1 and the corresponding electrode layer 270 is equivalent to zero. Therefore, a large number of capacitor packages originally connected via C _CS1 disappeared, and the huge signal sensed by the corresponding electrode of the large area could not be cross-connected to the touch sensing electrode S1 via C _CS1 , and the touch sensing electrode S1 was The capacitance is determined only by the capacitance C _fs1 between the finger and the touch sensing electrode S1 and the capacitance C _S1G between the touch sensing electrode S1 and the touch ground 410. It can be seen from FIG. 5 that the capacitance C _fs1 between the finger and the touch sensing electrode S1 occupies more components in the sensing signal due to the above-mentioned treatment of the equivalent elimination of the capacitor, so the technique of the present invention can detect more accurately than the prior art. Measure and distinguish the touch position.

FIG. 7 is another stacked diagram of an in-cell OLED touch display device 700 with increased touch position resolution. Figure 7 is similar to Figure 2 but with the main difference being the anodically opposite of the pixel electrode layer 670 and the corresponding electrode layer 650. That is, in FIG. 7, the pixel electrode layer 670 is a cathode layer, and the corresponding electrode layer 650 is an anode layer. The pixel electrode layer 670 in FIG. 7 has a plurality of pixel electrodes 671. In FIG. 7, the pixel electrode 671 is a cathode pixel electrode. Each of the pixel electrodes 671 corresponds to a pixel driving transistor of the pixel driving circuit 241 of the thin film transistor layer 240, that is, each cathode pixel electrode of the plurality of cathode pixel electrodes and the corresponding The source/drain 2415 of the pixel driving transistor of the pixel driving circuit 241 is connected to form a pixel of a specific color. A pole, such as a red pixel electrode, a green pixel electrode, or a blue pixel electrode.

In FIG. 7, not only the pixel electrode layer 670 and the corresponding electrode layer 650 are anodically reversed, but also the hole transport sublayer of the display layer 630 is matched to the pixel electrode layer 670 and the corresponding electrode layer 650 ( The position of the hole transporting layer (HTL) 631 and the electron transporting layer (ETL) 635 are also reversed. The pixel electrode layer 670 has a plurality of pixel electrodes 671, and each pixel electrode of the plurality of pixel electrodes 671 is connected to a source/drain of a corresponding pixel driving transistor of the pixel driving circuit.

In this embodiment, the output of the amplifier 261 having a gain greater than zero is connected to the corresponding electrode layer 650. When the touch sensing detection is performed, the selection switch group 510 amplifies an inductive signal sensed by a touch sensing electrode through the amplifier 261 having a gain greater than zero to generate a phase inversion sensing signal and apply to the corresponding electrode layer. 650 to reduce the capacitive effect between the touch sensing electrode and the corresponding electrode layer 650.

FIG. 8 is another stacked diagram of an in-cell OLED touch display device 800 with increased touch position resolution. 8 is similar to FIG. 2 but with the main difference being that a sensing electrode layer 260 is disposed in a thin film sub-layer 710 and a data line sub-layer 720 in the thin film transistor layer 240. For a related art of the sensing electrode layer 260 disposed on the gate line sub-layer 710 and a data line sub-layer 720, reference may be made to the M473556 announcement filed by the inventor of the present application and disclosed.

FIG. 9 is a schematic diagram showing another stacking of the embedded OLED touch display device 900 with increased touch position resolution. FIG. 9 is similar to FIG. 2 but the main difference is that the sensing electrode layer 260 is disposed in the pixel electrode layer 250. That is, the plurality of conductive metal lines 310 and 320 are disposed between the pixel electrodes 251, thereby forming a plurality of touch sensing electrodes (S1, S2, S3, ..., S _N in the pixel electrode layer 250). ).

FIG. 10 is another schematic diagram of a stacked layer of an in-cell OLED touch display device 1000 with increased touch position resolution. 10 is similar to FIG. 2 but the main difference is that in FIG. 10, the red light-emitting layer 933-1, the blue light-emitting layer 933-2, and the green light-emitting layer 933-3 are used, so that it is not necessary to use a color filter (color filter). ), black matrix, and protective layer. In other embodiments, since there is no color filter, black matrix, and protective layer, the upper substrate is not absolutely necessary, and the water-oxygen barrier material can be directly deposited by chemical vapor deposition. The sputtering method or the vapor deposition method may form a thin film encapsulation layer 1010 over the luminescent material layer. This embodiment is particularly suitable for a flexible organic light emitting diode touch display panel.

FIG. 11 is another schematic diagram of a stacked layer of an in-cell OLED touch display device 1100 with increased touch position resolution. 11 is similar to FIG. 7 but the main difference is that in FIG. 11, the red light-emitting layer 933-1, the blue light-emitting layer 933-2, and the green light-emitting layer 933-3 are used, so that it is not necessary to use a color filter (color filter). ), black matrix, and protective layer.

FIG. 12 is another schematic diagram of a stacked layer of an in-cell OLED touch display device 1200 with increased touch position resolution. Figure 12 is similar to Figure 8 but the main difference is: In Figure 12, use Since the red light-emitting layer 933-1, the blue light-emitting layer 933-2, and the green light-emitting layer 933-3 are used, it is not necessary to use a color filter, a black matrix, and a protective layer.

FIG. 13 is another stacked diagram of an in-cell OLED touch display device 1300 with increased touch position resolution. 13 is similar to FIG. 9 but the main difference is that in FIG. 13, the red light-emitting layer 933-1, the blue light-emitting layer 933-2, and the green light-emitting layer 933-3 are used, so that it is not necessary to use a color filter (color filter). ), black matrix, and protective layer.

It can be seen from the foregoing description that the present invention provides a plurality of openings in the corresponding electrode layer 270, which does not shield the touch signals. Therefore, the present invention can apply the In-Cell embedded touch technology to the organic light emitting diode (OLED). ) on the display. In the detection of the finger touch position, the sensing signal of the touch sensing electrode S1 in the selected detection is generated by the at least one amplifier 261 having a gain greater than zero, and the in-phase copying induction signal is generated, and the in-phase is copied. The sensing signal is applied to the corresponding electrode layer 270, so that the touch sensing electrode S1 and the corresponding electrode layer 270 have the same potential, so that the capacitance between the touch sensing electrode S1 and the corresponding electrode layer 270 is equivalent to 0. . The capacitance between the finger and the touch sensing electrode S1 thus occupies more components in the sensing signal, so the technique of the present invention can detect the touch position more accurately than the prior art. At the same time, in order to avoid the in-phase copy-sensing signal interference display panel applied to the corresponding electrode layer 270, the power supply of the display signal of the corresponding electrode layer 270 and the ground 420 and the sensing electrode layer 260 and at least one amplifier having a gain greater than zero. The power of the 261 is separated from the touch ground 410. So that you can increase the Detect Measure the accuracy of the touch position without disturbing the display quality.

The above-mentioned embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments.

200‧‧‧In-cell OLED display device

210‧‧‧Upper substrate

220‧‧‧lower substrate

230‧‧‧Display material layer

240‧‧‧film transistor layer

250‧‧‧pixel electrode layer

260‧‧‧Induction electrode layer

270‧‧‧corresponding electrode layer

280‧‧‧Lighting layer

290‧‧‧Color filter layer

300‧‧ ‧ protective layer

241‧‧‧ pixel drive circuit

2411‧‧‧ gate

2413‧‧‧汲/source

2415‧‧‧Source/Bungee

251‧‧‧Anode element electrode

271‧‧‧Opening

261‧‧‧Amplifier with gain greater than zero

263‧‧‧ Capacitance

231‧‧‧ hole transmission sublayer

233‧‧‧Lighting layer

235‧‧‧Electronic transmission sublayer

Claims (18)

An in-cell OLED touch display device for increasing touch position resolution includes: an upper substrate; a lower substrate disposed parallel to the upper substrate and sandwiching an organic light emitting display material layer therebetween a thin film transistor layer disposed on one side of the lower substrate facing the display material layer, the thin film transistor layer comprising a plurality of thin film transistors and a plurality of gate driving lines and a plurality of data driving lines; a pixel electrode a layer comprising a plurality of pixel electrodes disposed between the thin film transistor layer and the display material layer, each of the pixel electrodes being respectively connected to a source/drain of a thin film transistor; a sensing electrode layer, cloth Between the lower substrate and the display material layer, comprising a plurality of touch sensing electrodes; and a corresponding electrode layer, the corresponding electrode layer implanting a plurality of regions corresponding to the plurality of pixel electrodes Open the hole and make the power line pass through. An in-cell OLED touch display device for increasing touch position resolution according to claim 1, further comprising at least one amplifier having a gain greater than zero, the amplifier being electrically connected to the sensing electrode Between the layer and the corresponding pole layer. An in-cell OLED touch display device for increasing touch position resolution according to claim 2, further comprising a selection switch group, wherein the selection switch group sequentially selects at least one of The touch signal on the touch sensing electrode is connected to the amplifier whose gain is greater than zero, and is processed by the amplifier and output to the corresponding electrode layer. An in-cell OLED touch display device with a touch position resolving capability as described in claim 3, wherein the corresponding electrode layer is coupled to the power grounding system differently than the sensing electrode layer The touch ground coupled to the amplifier whose gain is greater than zero. An in-cell OLED touch display device with a touch position resolving capability as described in claim 4, wherein each touch sensing electrode corresponds to a plurality of pixel electrodes, and the corresponding electrode The layer is implanted with at least one opening at a position relative to each of the touch sensing electrodes. An in-cell OLED touch display device for increasing touch position resolution according to the first aspect of the invention, wherein the plurality of touch sensing electrodes are polygonal, circular, elliptical, and star-shaped. , wedge, radiator, triangle, pentagon, hexagon, octagon, rectangle or square. An in-cell OLED touch display device with a touch position resolving capability as described in claim 6 , wherein the plurality of touch sensing electrodes are formed by a grid of conductive metal lines. The conductive metal wire is chromium, bismuth, aluminum, silver, copper, titanium, nickel, bismuth, cobalt, tungsten, magnesium (Mg), calcium (Ca), potassium (K), lithium (Li), indium (In), Zinc, tin, alloy, alloy of the above materials or lithium fluoride (LiF), magnesium fluoride (MgF2), and lithium oxide (Li2O) combined with aluminum (Al). An in-cell OLED touch display device with increased touch position resolution according to the seventh aspect of the invention, wherein the conductive metal wire of the conductive metal grid forming the plurality of touch sensing electrodes The implant is at a relative position of the plurality of openings of the corresponding electrode layer. An in-cell OLED touch display device with increased touch position resolution according to the seventh aspect of the invention, wherein the conductive metal wire of the conductive metal grid forming the plurality of touch sensing electrodes The plurality of gate drive lines and the plurality of data drive lines are disposed at opposite positions of the plurality of gate drive lines. An in-cell OLED touch display device for increasing touch position resolution includes: an encapsulation layer; a lower substrate disposed parallel to the encapsulation layer and sandwiching an organic light-emitting display material layer therebetween a thin film transistor layer disposed on one side of the lower substrate facing the display material layer, the thin film transistor layer comprising a plurality of thin film transistors and a plurality of gate driving lines and a plurality of data driving lines; a pixel electrode a layer comprising a plurality of pixel electrodes disposed between the thin film transistor layer and the display material layer, each of the pixel electrodes being respectively connected to a source/drain of a thin film transistor; a sensing electrode layer, cloth Between the lower substrate and the display material layer, comprising a plurality of touch sensing electrodes; and a corresponding electrode layer, the corresponding electrode layer implanting a plurality of regions corresponding to the plurality of pixel electrodes Open the hole and make the power line pass through. An in-cell OLED touch display device for increasing touch position resolution according to claim 10, further comprising at least one amplifier having a gain greater than zero, the amplifier being electrically connected to the sensing electrode Between the layer and the corresponding electrode layer. An in-cell OLED touch display device for increasing touch position resolution according to claim 11 further comprising a selection switch group, wherein the selection switch group sequentially selects at least one of The touch signal on the touch sensing electrode is connected to the amplifier whose gain is greater than zero, and is processed by the amplifier and output to the corresponding electrode layer. An in-cell OLED touch display device capable of increasing touch position resolution according to claim 12, wherein the corresponding electrode The power grounding coupled to the layer is different from the touch ground coupled to the sensing electrode layer and the amplifier having the gain greater than zero. An in-cell OLED touch display device with a touch position resolving capability as described in claim 13 , wherein each touch sensing electrode corresponds to a plurality of pixel electrodes, and the corresponding electrode The layer is implanted with at least one opening at a position relative to each of the touch sensing electrodes. An in-cell OLED touch display device with increased touch position resolution according to claim 10, wherein the plurality of touch sensing electrodes are polygonal, circular, elliptical, and star-shaped. , wedge, radiator, triangle, pentagon, hexagon, octagon, rectangle or square. An in-cell OLED touch display device for increasing touch position resolution according to claim 15 wherein the plurality of touch sensing electrodes are formed by a grid of conductive metal lines The conductive metal wire is chromium, bismuth, aluminum, silver, copper, titanium, nickel, bismuth, cobalt, tungsten, magnesium (Mg), calcium (Ca), potassium (K), lithium (Li), indium (In) , zinc, tin, alloy, alloy of the above materials or lithium fluoride (LiF), magnesium fluoride (MgF2), and lithium oxide (Li2O) and aluminum (Al) combination. An in-cell OLED touch display device capable of increasing touch position resolution according to claim 15 wherein the conductive metal wire of the conductive metal grid forming the plurality of touch sensing electrodes The implant is at a relative position of the plurality of openings of the corresponding electrode layer. An in-cell OLED touch display device capable of increasing touch position resolution according to claim 15 wherein the conductive metal wire of the conductive metal grid forming the plurality of touch sensing electrodes The plurality of gate drive lines and the plurality of data drive lines are disposed at opposite positions of the plurality of gate drive lines.