KR20060114596A - Light emission device including touch panel - Google Patents

Abstract

A light emission display device having a touch panel is provided to increase visibility of a displayed image by preventing an external beam from being reflected on the light emitting display device. A light emission display device having a touch panel includes a substrate(111), a panel(140), and a touch panel(200). An image display portion including at least one light emitting element is formed on the substrate. The panel is formed on the substrate and encloses the light emitting element with the substrate. The touch panel is formed on the panel and includes a first board, a second board, and a separation unit. The first board includes a lower electrode. The second board is opposed to the first board and selectively passes an incident beam. The separation unit forms a predetermined gap between the first and second boards.

Description

Light emitting device including touch panel {Light Emission Device including Touch Panel}

1 is a light emitting display device including an exploded perspective view of a touch panel according to the present invention.

2 is a side cross-sectional view of a light emitting display device including a touch panel according to the first embodiment of the present invention.

3 is a side cross-sectional view of a light emitting display device including a touch panel according to the second embodiment of the present invention.

4 is a side cross-sectional view of a light emitting display device including a touch panel according to a third embodiment of the present invention.

♣ Explanation of symbols for main part of drawing ♣

100; Light emitting display device 110: image display unit

120: thin film transistor 130: light emitting element

140: panel 200, 300, 400: touch panel

210, 310, 410: first substrate 330, 430, 530: second substrate

250, 350, 450: spacer 360, 460: sealing member

370: insulating layer 361: first sealing portion

363: second sealing portion

The present invention relates to a light emitting display device including a touch panel, and more particularly, to a light emitting display device including a touch panel having a polarizing function.

Personal computers, portable transmission devices, and other personal information processing devices perform text and graphic processing using various external input devices such as a keyboard, a mouse, and a digitizer.

In particular, the digitizer is a device that digitally detects the position of a finger or a pen on a specially manufactured flat plate and outputs it by XY coordinates. Panels have been commonly used in electronic organizers or personal information processing devices.

Furthermore, recently, a light emitting display device including a touch panel manufactured by attaching a touch panel to a front surface of a light emitting display device to perform various screen operation functions on a display has been provided. Generally, the touch panel consists of two panels that are isolated by the spacers and arranged to be in contact with each other by the pressing of the spacers. Such a touch panel includes a resistive film type, a capacitive type, an ultrasonic type, and the like, and these various types of touch panels differ in design and processing technology depending on the type.

In general, a touch panel provided on an upper portion of a light emitting display device includes an upper film having transparency having an upper electrode formed thereon, a lower substrate having transparency, and a predetermined space between the upper film and the lower substrate formed like the upper film having the lower electrode formed thereon. It includes a spacer formed between them to have. In such a touch panel, when the upper film and the lower substrate contact each other by pressing the upper film through an input means such as a finger or a pen on the upper film, the upper electrode formed on the upper film and the lower electrode formed on the lower substrate are energized with each other. . Accordingly, the electrical signal is detected by the resistance value of the contacted position, and the position is determined using the magnitude of the detected electrical signal.

However, when such a touch panel is mounted on the upper portion of the light emitting display device, since the upper film and the lower substrate having transparency are used to easily transmit the light emitted from the light emitting element to the outside, light rays incident from the outside (Eg, light from the sun, lighting equipment, etc.) may cause a reflection phenomenon. Accordingly, there is a problem that it is not easy for a user to input data through the touch panel in a place having a predetermined brightness or more, and it is not easy to recognize an image displayed on the image display unit of the light emitting display device.

Accordingly, an object of the present invention is to solve the conventional problems, and an object of the present invention is to provide a light emitting display equipped with a touch panel that can easily recognize an image displayed through an image display unit of a light emitting display device by preventing external light reflection. To provide a device.

In order to achieve the above object, the present invention provides a light emitting display device comprising: a substrate having an image display unit including at least one light emitting element; A panel formed on the substrate to seal the light emitting device together with the substrate; A first substrate formed on the panel and having a lower electrode, a second substrate facing the first substrate and selectively transmitting incident light, and a predetermined spaced space between the first substrate and the second substrate; It includes a touch panel including a spacer formed. Preferably, the second substrate is a polarizing film having a polarizing function.

According to another aspect of the present invention, a light emitting display device includes a substrate having an image display unit including at least one light emitting element; An upper substrate formed on the substrate to seal the light emitting device together with the substrate, an upper substrate having an upper electrode and a polarizing film, a lower substrate formed opposite to the upper substrate, and having a lower electrode, the upper substrate and the lower substrate; A touch panel having a separation member formed to form a predetermined separation space therebetween; And a sealing member interposed between the outside of the image display unit of the substrate and the external input device to seal the substrate and the touch panel.

Preferably, the spacer is a spacer formed on at least one side of the upper substrate and the lower substrate. The spacer is made of an insulating material in a dot shape. And the polarizing layer is selected from at least one of a film, a plastic, a film / plastic, and a film / polarizer.

1 is a light emitting display device including an exploded perspective view of a touch panel according to the present invention, Figure 2 is a side cross-sectional view according to an embodiment of a light emitting display device including a touch panel of the present invention.

1 and 2, the light emitting display device 100 includes a substrate 111 having an image display unit 110 and a pad unit 150, a panel 140 formed on the substrate 111, and a panel 140 formed on the substrate 111. The touch panel 200 is formed on the panel 140.

The image display unit 110 formed on the substrate 111 includes a plurality of thin film transistors 120 and a plurality of light emitting devices 130, and the pad unit 150 includes a driving circuit unit 151 and a terminal unit 153. do. The thin film transistor 120 and the light emitting element 130 constituting the image display unit 110 are formed on the substrate 101.

A buffer layer 112 and a semiconductor layer 117 are sequentially formed on the substrate 111, and a gate insulating layer 113, a gate electrode 121, an interlayer insulating layer 114, a source and a drain electrode are formed on the semiconductor layer 117. 123 and a protective film 115 are formed. The thin film transistor 120 includes a gate electrode 120, a source and a drain electrode 123. The thin film transistor 120 is electrically connected to the thin film transistor 120 through a contact hole (not shown) formed in the passivation layer 115 on the thin film transistor 120. The light emitting device 130 is formed to be connected. The light emitting device 130 includes an anode electrode 131, a light emitting layer 133, and a cathode electrode 135. The pixel defining layer 116 is formed on the anode electrode 131 and the passivation layer 115 of the light emitting device 130.

Next, a panel 140 is formed on the substrate 111 to seal the thin film transistor 120 and the light emitting device 130 together with the substrate 111. At this time, the substrate 111 and the panel 140 are sealed by the sealing material 118. The panel 140 is an insulating substrate such as glass having transparency, and a transparent absorbent (not shown) for absorbing moisture remaining between the panel 140 and the substrate 111 may be installed on the lower surface of the panel 140. have.

Meanwhile, the touch panel 200 is provided between the first panel 210, the second panel 230 facing the first panel 210, and the first panel 210 and the second panel 230 to be spaced apart from each other. Spacers 250 forming a space. The first panel 210 includes a first substrate 211, a first transparent conductive film 213 formed on the first substrate 211, a first electrode 215, an electrode induction line 216, and the like. The first electrode 215 is formed to be electrically connected to the electrode induction line 216 along the circumferential direction of the first substrate 211, the electrode induction line 210 is connected to the cable (not shown) one end and the other end is It is connected to the first electrode 215. The first transparent conductive film 213 is made of ITO, IZO, ITZO, or the like.

The spacer 250 is uniformly formed on the first transparent conductive film 213 of the first substrate 211 in the same dot shape at predetermined intervals. An active region for activating a signal input from the outside with an insulating material is usually used. It is formed in (not shown).

The second panel 230 constituting the touch panel 200 includes a second substrate 231, a second transparent conductive film 233, a second electrode 235, and an electrode induction formed on a lower surface of the second substrate 231. Line 236 and the like. Here, the second electrode 235 is formed to be electrically connected to the electrode induction line 236 along the circumferential direction of the second substrate 231, the electrode induction line 236 is connected to the cable is not shown The other end is connected to the second electrode 235. The second substrate 231 is a film having a polarizing function, hereinafter referred to as a polarizing film. The second substrate 231 in the form of a polarizing film has flexibility and performs a function of selecting and transmitting light incident from the outside. Like the first transparent conductive film, the second transparent conductive film is made of ITO, IZO, ITZO, or the like. At least one adhesive layer 290 is formed between the first panel 210 and the second panel 230 to bond the first panel 210 and the second panel 230 to each other.

3 is a side cross-sectional view of a light emitting display device including a touch panel according to a second embodiment of the present invention, and FIG. 4 is a side cross-sectional view of a light emitting display device including a touch panel according to a third embodiment of the present invention. The same reference numerals apply to the same components as those of FIGS. 1 and 2, and a detailed description thereof will be omitted.

Referring to FIG. 3, the light emitting display device 100 includes a substrate 111 having an image display unit 110 and a pad unit 150, a touch panel 300 formed on the substrate 111, and a touch. The sealing member 360 is formed between the panel 300 and the substrate 111.

The touch panel 300 is provided between the first panel 310, the second panel 330 facing the first panel 310, and the first panel 310 and the second panel 330 to have a predetermined space. Spacer 350. The first panel 310 includes a first substrate 311, a first transparent conductive film 313 formed on the first substrate 311, a first electrode (not shown), an electrode induction line 316, and the like. . The second panel 330 constituting the touch panel 300 includes a second substrate 331, a second transparent conductive film 333, a second electrode 335, and an electrode induction formed on a lower surface of the second substrate 331. Line (not shown) or the like. The second substrate 331 is a film having a polarizing function, hereinafter referred to as a polarizing film. The second substrate 331 in the form of a polarizing film is flexible and performs a function of selecting and transmitting light incident from the outside.

Next, a sealing member 360 is formed between the touch panel 300 and the substrate 111 on which the plurality of layers are stacked, and the sealing member 360 has a circumferential direction between the substrate 111 and the touch panel 300. It is formed along the seal so that the light emitting device 130 is not exposed to the outside. The sealing member 360 is formed on the substrate 111 along the circumferential direction of the image display unit 110. The first sealing part 361 and the lower surface of the first panel 310 of the touch panel 300 are recessed. Is provided between the first seal 361 and the second seal 363 formed at a position corresponding to the first seal 361. In addition, an insulating layer 360 is formed on the second sealing part 363 in contact with one side of the sealing member 360.

Referring to FIG. 4, the touch panel 400 may include a first panel 410, a second panel 430 facing the first panel 410, and a space between the first panel 410 and the second panel 430. It includes a spacer 450 provided in the predetermined space. The first panel 410 includes a first substrate 411, a first transparent conductive film 413 formed on the first substrate 411, a first electrode (not shown), an electrode induction line 416, and the like. . The second panel 430 constituting the touch panel 400 includes a second substrate 431, a second transparent conductive film 433 formed on the bottom surface of the second substrate 431, a second electrode 435, and an electrode induction. Line (not shown) or the like. The second substrate 431 is in the form of a film having a polarizing function, hereinafter referred to as a polarizing film. The second substrate 431 in the form of a polarizing film is flexible and performs a function of selecting and transmitting light incident from the outside.

Next, a sealing member 460 is formed between the touch panel 400 and the substrate 111, and the sealing member 460 is formed along the circumferential direction of the substrate 111 and the touch panel 400 to emit light. 130 and the thin film transistor 120 is sealed so as not to be exposed to the outside. In the present exemplary embodiment, the sealing member 460 may use an adhesive material such as a frit or an adhesive tape to contact the substrate 101 of the touch panel 440. .

The operation principle of the touch panels 200, 300, and 400 having such a configuration is to press the polarizing films 231, 331, 431 (second substrate) through an input means such as a pen (or a finger) to contact the first substrates 211, 311, 411, and the upper electrode. 235, 335, 435 and the lower electrodes 215, 315, 415 are energized with each other. Accordingly, the electrical signal is detected by the resistance value of the position where the polarizing films 231, 331, 431 and the first substrates 211, 311, 411 are in contact with each other, thereby determining the position using the magnitude of the detected electrical signal. Meanwhile, since the second substrates 231, 331, and 431 have a polarization function, external light reflection can be prevented.

In the present embodiment, a resistive touch panel has been described, but a capacitive touch panel can be used, and various touch panels can be used. Unlike the sealing members disclosed in the present exemplary embodiment, the substrate of the touch panel and the light emitting display device may be sealed by air injection using an O-ring or the like.

Although the technical spirit of the present invention has been described in detail according to the above-described preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the technical idea of the present invention.

According to the present invention, by mounting a touch panel having a polarizing function, it is possible to prevent reflection of external light, thereby making it possible to make use of a natural input sensation and to improve the visibility of the displayed image. In addition, since a separate polarizing layer does not need to be provided, productivity can be improved by reducing the number of parts and the number of processes.

Claims (6)

A substrate on which an image display unit including at least one light emitting element is formed; A panel formed on the substrate to seal the light emitting device together with the substrate; A first substrate formed on the panel and having a lower electrode, a second substrate facing the first substrate and selectively transmitting incident light, and a predetermined spaced space between the first substrate and the second substrate; Touch panel including a formed spacer member Light emitting display device comprising a. The method of claim 1, The second substrate is a polarization film having a polarizing function. A substrate on which an image display unit including at least one light emitting element is formed; A first panel formed on the substrate to seal the light emitting device together with the substrate, a first panel having a lower electrode, a second panel facing the first substrate and having a polarizing function with the upper electrode, the first panel and A touch panel having a spacer formed to form a predetermined separation space between the second panels; And A sealing member interposed between an outer side of the image display unit of the substrate and the external input device to seal the substrate and the touch panel; Light emitting display device comprising a. The method according to claim 1 or 3, And the spacer is a spacer formed on at least one side of the upper substrate and the lower substrate. The method of claim 4, wherein The spacer is a dot-shaped light emitting display device made of an insulating material. The method according to claim 2 or 3, And the polarizing layer is selected from at least one of a film, a plastic, a film / plastic, and a film / polarizer.

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