KR101617140B1 - In-cell amoled touch panel - Google Patents

In-cell amoled touch panel Download PDF

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Publication number
KR101617140B1
KR101617140B1 KR1020140096367A KR20140096367A KR101617140B1 KR 101617140 B1 KR101617140 B1 KR 101617140B1 KR 1020140096367 A KR1020140096367 A KR 1020140096367A KR 20140096367 A KR20140096367 A KR 20140096367A KR 101617140 B1 KR101617140 B1 KR 101617140B1
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South Korea
Prior art keywords
touch sensor
sensor array
touch
layer
electrode layer
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KR1020140096367A
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Korean (ko)
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KR20150136566A (en
Inventor
보-장 순
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에버디스플레이 옵트로닉스 (상하이) 리미티드
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Priority to CN201410228741.5A priority Critical patent/CN103984442B/en
Priority to CN201410228741.5 priority
Application filed by 에버디스플레이 옵트로닉스 (상하이) 리미티드 filed Critical 에버디스플레이 옵트로닉스 (상하이) 리미티드
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Abstract

The present invention relates to a built-in AMOLED touch panel and belongs to the field of display technology. Wherein the OLED panel of the built-in AMOLED touch panel includes a lower touch sensor layer and an upper touch sensor layer, the lower touch sensor layer includes a lower touch sensor array, the upper touch sensor layer includes an upper touch sensor array, The arrangement direction of the lower touch sensor array and the arrangement direction of the upper touch sensor array are perpendicular to each other. The lower touch sensor array and the upper touch sensor array constitute a mutual capacitance touch sensing unit for sensing a touch signal. Accordingly, the integrated touch panel can be formed by integrating the sensing element of the touch signal and the OLED panel. The built-in AMOLED touch panel of the present invention can be applied to an electronic product which is simple in structure, thinner in thickness, low in cost, and lighter in weight. Further, the transmittance of the panel can be effectively improved, moire phenomenon can be reduced, and the user's feeling can be greatly improved.

Description

IN AMOLED TOUCH PANEL {IN-CELL AMOLED TOUCH PANEL}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display technology field, and more particularly to a light emitting diode display technology field, and specifically to an embedded AMOLED touch panel.

2. Description of the Related Art Display panels having touch functions in existing electronic products are commonly mounted in various smart portable devices. Therefore, a lightweight standard for electronic products is equally demanded in touch panels. On-cell Touch (On-Cell Touch), One Glass Solution (OGS) and other solutions are constantly emerging from the out-of-cell touch.

Here, the general structure of the on-cell touch panel is as shown in FIG. The on-cell attaches the upper touch sensor and the related film material on the upper cover plate glass, and finally attaches one cover glass to the uppermost one. The disadvantage of this method is that the transmittance of the panel is relatively low (low transmittance), moire phenomenon easily occurs, and the panel is relatively thick, resulting in a relatively high cost.

A conventional one glass solution (OGS) panel structure in the prior art is as shown in Fig. OGS reduces the organic yield to two by integrating the top cover plate glass and sensor into a glass panel and attaching it to the panel. Accordingly, the overall thickness of the panel can be reduced to a certain extent as compared with the on-cell touch panel, and the production cost can be reduced. However, there is still a problem that the transmittance of the panel is relatively low and moire phenomenon easily occurs in the original glass touch panel structure according to the existing technology.

Accordingly, it is an object of the present invention to provide a touch panel capable of reducing a thickness of a panel, reducing a cost, being applied to a lightweight electronic product, and improving the transmittance of a panel and reducing a moire phenomenon, It is a problem that needs to be solved urgently in the technical field to which it belongs.

The present invention overcomes defects according to the conventional techniques as described above to effectively improve the transmittance of the panel and reduce the phenomenon of moiré, and is also applicable to a lightweight electronic device which is simple in structure, thinner in thickness, lower in cost, thinner and smaller And an in-cell touch AMOLED touch panel capable of significantly improving a feeling of use by users.

In order to achieve the above object, an internal AMOLED touch panel of the present invention includes a substrate, a TFT backplate disposed on the substrate, and a lower electrode layer, an upper electrode layer, and an OLED between the lower electrode layer and the upper electrode layer, Layer. The embedded AMOLED touch panel further includes a lower touch sensor layer and an upper touch sensor layer, wherein the lower touch sensor layer includes a lower touch sensor array, and the lower touch sensor of the lower touch sensor array includes a lower touch sensor array Wherein the upper touch sensor layer includes an upper touch sensor array and the upper touch sensor in the upper touch sensor array includes an upper gap passage formed between upper electrodes of the upper electrode layer, The arrangement direction of the lower touch sensor array and the arrangement direction of the upper touch sensor array are perpendicular to each other, and the lower touch sensor array and the upper touch sensor array have mutual capacitance for sensing a touch signal, A touch sensing unit, and the lower touch sensor unit Ray and the upper touch sensor array are both electrically connected to the touch signal circuit.

In the built-in AMOLED touch panel, the lower electrode layer is an OLED plate anode layer, and the upper electrode layer is an OLED plate cathode layer.

In the built-in AMOLED touch panel, a lower gap passage formed between the lower electrodes of the lower electrode layer is a first direction, and the lower touch sensor array is a scan signal sensor array provided in a lower gap passage in the first direction, The upper gap formed between the upper electrodes of the upper electrode layer is a second direction perpendicular to the first direction and the upper touch sensor array is a driving signal sensor array provided in the upper gap path in the second direction.

In the built-in AMOLED touch panel, a lower spacing passage formed between each lower electrode of the lower electrode layer is a second direction, and the lower touch sensor array is a driving signal sensor array provided in a lower spacing passage in the second direction, The upper gap formed between the upper electrodes of the upper electrode layer is a first direction perpendicular to the second direction and the upper touch sensor array is a scan signal sensor array provided in the upper gap path in the first direction.

In the built-in AMOLED touch panel, the touch signal circuit is installed in the TFT backplane. According to the internal AMOLED touch panel of the present invention, the OLED plate of the built-in AMOLED touch panel includes a lower touch sensor layer and an upper touch sensor layer, wherein the lower touch sensor layer includes a lower touch sensor array, The lower touch sensor in the touch sensor array is patterned in a lower gap formed between the lower electrodes of the lower electrode layer, the upper touch sensor layer includes an upper touch sensor array, and the upper touch sensor in the upper touch sensor array Wherein the upper touch sensor array and the upper touch sensor array are patterned in an upper spacing passage formed between upper electrodes of the upper electrode layer and the arrangement direction of the lower touch sensor array and the arrangement direction of the upper touch sensor array are vertical, A mutual capacitance for sensing a touch signal, Thereby constituting a chisensing unit. Accordingly, an integrated-type (In-Cell Touch) touch panel can be formed by integrating the sensing element of the touch signal and the OLED plate.

The built-in AMOLED touch panel of the present invention can be applied to an electronic product which is simple in structure, thinner in thickness, low in cost, and lighter in weight. Further, the transmittance of the panel can be effectively improved, moire phenomenon can be reduced, and the user's feeling can be greatly improved.

1 is a structural explanatory view of an external touch panel according to the prior art.
2 is a structural explanatory view of a one-glass touch panel according to the prior art.
3 is a structural explanatory view of a built-in AMOLED touch panel according to the present invention.
4 is a diagram illustrating a specific cross-sectional structure of a built-in AMOLED touch panel according to the present invention.
5 is an explanatory diagram of an XY axis arrangement method of an upper / lower electrode layer in one embodiment of the built-in AMOLED touch panel according to the present invention.
FIG. 6 is an explanatory diagram of an XY-axis arrangement method of the upper and lower electrodes in another embodiment of the built-in AMOLED touch panel according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 3, FIG. 3 is a structural explanatory view of a built-in AMOLED touch panel according to the present invention.

In one embodiment, the embedded AMOLED touch panel comprises a substrate, a TFT backplane positioned on the substrate, and an OLED layer disposed on the TFT backplane and including a lower electrode layer, an upper electrode layer, and an OLED layer between the lower electrode layer and the upper electrode layer. Plate. 3 and 4, the built-in AMOLED touch panel further includes a lower touch sensor layer and an upper touch sensor layer, wherein the lower touch sensor layer includes a lower touch sensor array, Wherein the lower touch sensor in the array is patterned in a lower spacing path formed between each lower electrode of the lower electrode layer, the upper touch sensor layer includes an upper touch sensor array, Wherein the lower touch sensor array and the upper touch sensor array are patterned in an upper spacing passage formed between upper electrodes of the electrode layer and the arrangement direction of the lower touch sensor array and the arrangement direction of the upper touch sensor array are vertical, Mutual capacitance to sense the signal (touch sensing unit) It said touch sensor array also the upper and the lower touch sensor array are all electrically connected to the touch signal circuit. The touch signal circuit is provided on the TFT backplate. In a preferred embodiment, the lower electrode layer is an OLED plate anode layer, and the upper electrode layer is an OLED plate cathode layer.

In a further preferred embodiment, the lower gap passage formed between the lower electrodes of the lower electrode layer is a first direction, and the lower touch sensor array is a scan signal sensor array provided in a lower gap passage in the first direction, The upper gap formed between the upper electrodes of the electrode layer is a second direction perpendicular to the first direction, and the upper touch sensor array is a drive signal sensor array provided in the upper gap path in the second direction.

The lower touch sensor array is a driving signal sensor array provided in a lower spacing passage in a second direction, and the lower touch sensor array is formed in each upper portion of the upper electrode layer, The upper spacing passage formed between the electrodes is a first direction perpendicular to the second direction, and the upper touch sensor array is a scan signal sensor array provided in the upper spacing passage in the first direction.

In the application of the present invention, the design pattern of the built-in AMOLED touch panel according to the present invention is a projection-type capacitance touch control mechanism that integrates the touch sensor into the TFT process. A signal scan of the XY axis can be generated by the existing TFT process, and the function of the touch sensor can be realized. Thus, the cost can be successfully reduced, the transmittance can be improved, and the moire phenomenon can be reduced.

Specifically, when the OLED is fabricated, the anode of the OLED is first patterned to manufacture a scan signal of the X (or Y) axis. Next, a built-in touch sensing is formed by patterning the cathode of the OLED to manufacture a scan signal of Y (or X) axis.

As shown in FIGS. 5 and 6, according to a method of designing an actual design, a scan signal is designed in a vacant space of an anode, a related drive signal is patterned in a cathode covered on an entire surface, A positive scan signal and a negative electrode drive signal are formed as mutual capacitance type touch scan mechanisms to provide a touch sensing element.

The arrangement of the positive electrode and the negative electrode may be any of the methods shown in FIG. 5 or 6, and they are arranged in the XY-axis staggered pattern according to the pattern of the bilayer structure. And the outer periphery of the electrode is provided with a conductor for electrically connecting the electrode of the XY axis to the sensing path of the control circuit. In practice, when no electrically conductive objects are approaching, there is a fixed coupling capacitance between each touch electrode, wherein the distribution of the electric field between the electrode and the electrode is fixed, And records the electrode power value of each XY axis. When the finger of the human body touches the panel, the electric field distributed to each electrode fixedly changes due to the connection of some electric power lines to the finger skin, and a new capacitance is formed at the contact point, And the change of the power value is sensed at the control terminal to determine the contact point, thereby realizing the touch function.

According to the internal AMOLED touch panel of the present invention, the OLED plate of the built-in AMOLED touch panel includes a lower touch sensor layer and an upper touch sensor layer, wherein the lower touch sensor layer includes a lower touch sensor array, The lower touch sensor in the touch sensor array is patterned in a lower gap formed between the lower electrodes of the lower electrode layer, the upper touch sensor layer includes an upper touch sensor array, and the upper touch sensor in the upper touch sensor array Wherein the upper touch sensor array and the upper touch sensor array are patterned in an upper spacing passage formed between upper electrodes of the upper electrode layer and the arrangement direction of the lower touch sensor array and the arrangement direction of the upper touch sensor array are vertical, A mutual capacitance for sensing a touch signal, Thereby constituting a chisensing unit. Accordingly, an integrated-type (In-Cell Touch) touch panel can be formed by integrating the sensing element of the touch signal and the OLED plate. The built-in AMOLED touch panel of the present invention can be applied to an electronic product which is simple in structure, thinner in thickness, low in cost, and lighter in weight. Further, the transmittance of the panel can be effectively improved, moire phenomenon can be reduced, and the user's feeling can be greatly improved.

The present invention has been described above with reference to specific embodiments. However, it is obvious that various corrections and conversions can be performed within the spirit and scope of the present invention. Accordingly, the specification and drawings are intended to be illustrative of the invention only and not for the purpose of limiting the same.

Claims (5)

  1. Board;
    A TFT backplane positioned above the substrate;
    An OLED plate located on the TFT backing layer and including a lower electrode layer, an upper electrode layer, and an OLED layer between the lower electrode layer and the upper electrode layer;
    A lower touch sensor layer; And
    An upper touch sensor layer,
    Wherein the lower touch sensor layer includes a lower touch sensor array,
    Wherein the lower touch sensor in the lower touch sensor array is patterned in a lower gap formed between the lower electrodes of the lower electrode layer,
    Wherein the upper touch sensor layer includes an upper touch sensor array,
    Wherein the upper touch sensor in the upper touch sensor array is patterned in an upper gap formed between upper electrodes of the upper electrode layer,
    The arrangement direction of the lower touch sensor array and the arrangement direction of the upper touch sensor array are perpendicular to each other,
    The lower touch sensor array and the upper touch sensor array constitute a mutual capacitance touch sensing unit for sensing a touch signal
    The lower touch sensor array and the upper touch sensor array are both electrically connected to a touch signal circuit,
    Wherein the lower touch sensor includes a lower touch sensor line extending in parallel to the arrangement direction of the lower touch sensor array and a lower touch sensor pad having a width greater than the width of the lower touch sensor line, An upper touch sensor line extending in parallel to the arrangement direction of the touch sensor array and an upper touch sensor pad having a width greater than the width of the upper touch sensor line, A built-in AMOLED touch panel.
  2. The method according to claim 1,
    Wherein the lower electrode layer is an OLED plate anode layer,
    Wherein the upper electrode layer is an OLED plate cathode layer.
  3. 3. The method of claim 2,
    A lower gap formed between the lower electrodes of the lower electrode layer is a first direction,
    Wherein the lower touch sensor array is a scan signal sensor array provided in a lower spacing passage in the first direction,
    The upper gap formed between the upper electrodes of the upper electrode layer is a second direction perpendicular to the first direction,
    Wherein the upper touch sensor array is a drive signal sensor array provided in the upper gap path in the second direction.
  4. 3. The method of claim 2,
    The lower gap formed between the lower electrodes of the lower electrode layer is in a second direction,
    Wherein the lower touch sensor array is a driving signal sensor array provided in a lower gap passage in the second direction,
    Wherein the upper gap formed between the upper electrodes of the upper electrode layer is a first direction perpendicular to the second direction,
    Wherein the upper touch sensor array is a scan signal sensor array provided in the upper gap in the first direction.
  5. 5. The method according to any one of claims 1 to 4,
    Wherein the touch signal circuit is installed on the TFT backplane.
KR1020140096367A 2014-05-27 2014-07-29 In-cell amoled touch panel KR101617140B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201410228741.5A CN103984442B (en) 2014-05-27 2014-05-27 Embedded active matrix organic light-emitting diode contact panel
CN201410228741.5 2014-05-27

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KR20150136566A KR20150136566A (en) 2015-12-07
KR101617140B1 true KR101617140B1 (en) 2016-05-02

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JP (1) JP2015225649A (en)
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CN (1) CN103984442B (en)
TW (1) TWI522867B (en)

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CN103984442B (en) 2017-10-31
CN103984442A (en) 2014-08-13
JP2015225649A (en) 2015-12-14
TWI522867B (en) 2016-02-21
KR20150136566A (en) 2015-12-07
TW201545014A (en) 2015-12-01

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