KR101186251B1 - Flat Panel Type Display Apparatus Comprising Coordinates Inputting Unit - Google Patents

Abstract

A flat panel display device including a coordinate input unit is provided. A flat panel display device according to an embodiment of the present invention includes a flat panel unit for displaying an image; A coordinate input unit attached to the flat panel unit and outputting a coordinate signal corresponding to a point where the input unit contacts; And a contact portion attached to the coordinate input portion and in contact with the input means, wherein the contact portion includes a protrusion having the same pattern as that of the black matrix of the flat panel portion.

Liquid crystal display, organic EL display, touch screen, protrusion

Description

Flat panel type display unit including a coordinate input unit {Flat Panel Type Display Apparatus Comprising Coordinates Inputting Unit}

1 illustrates a flat panel display device according to a first embodiment of the present invention.

2 illustrates a flat panel display device according to a second embodiment of the present invention.

3a to 3c show the cross-sectional shape of the protrusions in the embodiment of the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS (S)

100: liquid crystal display 200: coordinate input unit

210: upper panel 220: lower panel

211: an electrode formed on the upper panel 221: an electrode formed on the lower panel

300: contact portion 310: protrusion

400: organic EL display

The present invention relates to a flat panel display device including a coordinate input unit.

In today's information society, the role of electronic displays has become very important, and various electronic displays have been widely used in various industrial fields. In the electronic display device field, electronic display devices having new functions suitable for the demands of the information society, which have been continuously developed and diversified, are continuously being developed. In general, an electronic display device refers to a device that transmits various pieces of information to a human through vision. That is, an electronic display device refers to an electronic device that converts an electronic information signal output from various electronic devices into an optical information signal that can be recognized by a human eye, and is a device that plays a role of a bridge between humans and electronic devices. It can be said.

In such an electronic display device, when an optical information signal is displayed by a light emitting phenomenon, it is referred to as a light emitting display device, and when it is displayed by light modulation due to reflection, scattering, or interference phenomenon, it is called a light receiving display device. A light emitting display device, also called an active display device, may include a cathode ray tube (CRT), an organic EL display (OLED), and the like. The light receiving display device, which is called a passive display device, may be a liquid crystal display (LCD), an electrophoretic image display (EPID), or the like.

Cathode ray tube display device, which is used for television and computer monitor, and has the longest history, has the highest market share in terms of economy, but has many disadvantages such as heavy weight, large volume and high power consumption. .

Recently, due to the rapid progress of semiconductor technology, various electronic devices can be made smaller, thinner and lighter in accordance with the trend of miniaturization, thinning and lightening of electronic devices, and low-voltage, low-power driving flat panel. The demand for a type display device is rapidly increasing. Accordingly, flat panel display devices such as liquid crystal display (LCD), organic EL display (OELD), and the like have been developed.

Flat panel display devices, such as liquid crystal display devices and organic EL display devices, have been used as display devices of notebook computers and monitors because they can be miniaturized, reduced in thickness, light in weight, and can be driven at low voltage and low power.

On the other hand, recent notebook computers and monitors include a flat panel display device that can input signals with a pen or the like. That is, when the user contacts the surface of the flat panel display device of the notebook computer or the monitor with an input means such as a pen, a signal or information is input.

However, since the surface of a flat panel display device of a notebook computer or a monitor does not have enough friction force, an input means such as a pen slides easily. Therefore, when writing on the surface of the flat panel display using an input means such as a pen, there is a problem that the writing feeling is not good.

Accordingly, an object of the present invention is to provide a flat panel type cover device capable of improving a writing feeling.

The technical objects to be achieved by the present invention are not limited to the technical matters mentioned above, and other technical subjects which are not mentioned can be clearly understood by those skilled in the art from the following description. There will be.

According to another aspect of the present invention, there is provided a flat panel display device including: a flat panel unit displaying an image; A coordinate input unit attached to the flat panel unit and outputting a coordinate signal corresponding to a point where the input unit contacts; And a contact portion attached to the coordinate input portion and in contact with the input means, wherein the contact portion includes a protrusion having the same pattern as that of the black matrix of the flat panel portion.

The flat panel unit is a liquid crystal display (LCD).

The flat panel unit is an organic EL display device (OLED).

The coordinate input unit may be a touch screen.

The touch screen is characterized in that it is one of a resistive touch screen, an ultrasonic touch screen and a capacitive touch screen.

delete

The cross-sectional shape of the protrusion is characterized in that the polygon.

The surface of the protrusion is characterized in that it is curved.

Specific details of other embodiments are included in the detailed description and the drawings. Advantages and features of the present invention, and methods of achieving the same will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. Like reference numerals refer to like elements throughout.

Hereinafter, a flat panel display device according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 illustrates a flat panel display device according to a first embodiment of the present invention. As shown in FIG. 1, the flat panel display device according to the first embodiment of the present invention includes a flat panel unit 100, a coordinate input unit 200, and a contact unit 300.

The flat panel unit 100 of the first embodiment is a liquid crystal display (LCD). The upper substrate 90 and the lower substrate 1 of the liquid crystal display face each other at a predetermined interval, and the liquid crystal layer 80 is interposed between the upper substrate 90 and the lower substrate 1.

A plurality of gate electrodes 8 and data electrodes 35 intersect each other on the lower substrate 1. The thin film transistor Tr is formed at the point where the gate electrode 8 and the data line 35 cross each other. A pixel electrode 65 connected to the thin film transistor Tr is formed in the pixel area P defined as an area where the gate electrode 8 and the data electrode 35 cross each other.

The color filter layer 92 and the common electrode 94 are sequentially formed in the upper substrate 90. The color filter layer 92 is a color filter 92-1 for transmitting only light of a specific wavelength band and a black matrix 92-2 positioned at the boundary of the color filter to block light on an area where the arrangement of liquid crystal is not controlled. It is composed.

Although not shown, the upper and lower polarizers for transmitting only light parallel to the polarization axis are positioned on the outer surfaces of the upper and lower substrates 90 and 1, and a back light, which is a separate light source, is disposed below the lower polarizer. It is.

The coordinate input unit 200 of the first embodiment is attached on the flat panel unit 100 and outputs a coordinate signal corresponding to the coordinate of the point where the input means such as a human hand or a pen contacts. The coordinate input unit 200 of the first embodiment is a touch screen. The touch screen included in the first embodiment of the present invention may be one of a resistive touch screen, an ultrasonic touch screen, and a capacitive touch screen.

The resistive touch screen outputs a coordinate signal corresponding to the point of contact according to a change in resistance due to pressure generated when the input means is touched. Since the input means absorbs the ultrasonic waves when the input means is in contact, the ultrasonic touch screen outputs a coordinate signal corresponding to the touched point according to the change of the ultrasonic waves. The capacitive touch screen outputs a coordinate signal corresponding to the touched point according to the change of the charge since the charge is collected at the point where the input means is touched when the input means is touched.

The coordinate input unit 200 illustrated in FIG. 1 illustrates a structure of a resistive touch screen. The resistive touch screen includes an upper panel 210 and a lower panel 220. The upper panel 210 and the lower panel 220 are spaced at regular intervals by spacers (not shown). Electrodes 211 and 221 are formed on the bottom surface of the upper panel 210 and the top surface of the lower panel 220. When the upper panel 210 is pressed by the input means, the electrode 211 of the upper panel 210 and the electrode 221 of the lower panel 220 come into contact with each other to change resistance. Since the voltage changes as the resistance changes, the touch screen driver (not shown) receives the voltage and outputs a coordinate signal.

The contact part 300 is attached on the coordinate input part 200. The contact part 300 is an optical film through which light can pass. Since the contact part 300 is attached on the coordinate input part 200, it is in direct contact with the input means. On the surface of the contact portion 300 in contact with the input means, a protrusion 310 for improving writing feeling is formed. When the input means such as a pen contacts the surface of the contact portion 300 by the user, the friction force is increased by the protrusion 310, so that the user can obtain a writing feeling as if writing on paper.

The pattern of the protrusion 310 is the same as that of the black matrix 92-2. That is, since the black matrix 92-2 is not a light emitting part, when the pattern of the protrusion 310 is the same as the pattern of the black matrix 92-2, the writing feeling is improved without loss of light.

2 illustrates a flat panel display device according to a second embodiment of the present invention. As shown in FIG. 2, the flat panel display device according to the second embodiment of the present invention includes a flat panel unit 400, a coordinate input unit 200, and a contact unit 300.

The flat panel unit 400 of the second embodiment is an organic EL display device OLED. An anode electrode 420 made of indium tin oxide (ITO) is formed on the substrate 410 of the OLED. An electroluminescent device 430 emitting light is formed between the anode electrode 420 and the anode electrode 420. The partition wall 440 is formed on the anode 420 to separate the cells. The cathode electrode 450 is formed on the EL device 430 and the partition wall 440. The protective cap 460 is to protect the electrodes 420 and 450, the EL device 430, and the partition wall 440 on the substrate 410, and is coupled to the substrate 410 by the sealant 470. Getter 480 removes foreign matter or moisture. A black matrix 490 is formed between the electroluminescent element 430 and the cathode electrode 450 to absorb light incident from the outside.

In the organic EL display device having such a structure, a first voltage is applied to the anode electrode 420, and a second voltage lower than the first voltage is applied to the cathode electrode 450. Accordingly, when the holes emitted from the anode electrode 420 and the electrons emitted from the cathode electrode 450 combine in the electroluminescent element 430, the electroluminescent element 430 emits light.

The coordinate input unit 200 according to the second embodiment outputs a coordinate signal corresponding to the coordinate of a point where an input means such as a human hand or a pen contacts. The coordinate input unit 200 of the second embodiment is a touch screen. The touch screen included in the second embodiment of the present invention may be one of a resistive touch screen, an ultrasonic touch screen, and a capacitive touch screen. Descriptions of the resistive touch screen, the ultrasonic touch screen, and the capacitive touch screen are the same as those described in the first embodiment of the present invention, and thus will be omitted.

The coordinate input unit 200 illustrated in FIG. 2 illustrates a structure of the resistive touch screen. The resistive touch screen of FIG. 2 operates in the same manner as the resistive touch screen of FIG. 1. That is, when the upper panel 210 is pressed by the input means, the electrode 211 of the upper panel 210 and the electrode 221 of the lower panel 220 come into contact with each other to change the resistance, and the voltage is changed according to the change of the resistance. Since the touch screen driver (not shown) receives a voltage and outputs a coordinate signal.

The contact part 300 is attached on the upper panel 210 of the coordinate input part 200. The contact part 300 is an optical film that allows light to pass through and is directly attached to the input unit because it is attached to the upper panel 210. On the surface of the contact portion 300 in contact with the input means, a protrusion 310 for improving writing feeling is formed. When an input means such as a pen contacts the surface of the contact portion 300, the friction force is increased by the protrusion 310, so that the user can obtain a writing feeling as if writing on paper.

The pattern of the protrusion 310 is the same as the pattern of the black matrix 490. That is, since the black matrix 490 is not a light emitting part, when the pattern of the protrusion 310 is the same as the pattern of the black matrix 490, the writing feeling is improved without loss of light.

The shape of the protrusion 310 may be variously formed.

3A to 3C show the cross-sectional shape of the protrusion 310 in the embodiment of the present invention. As shown in FIG. 3A, the cross-sectional shape of the protrusion 310 may be quadrangular. As shown in FIG. 3B, the cross-sectional shape of the protrusion 310 may be triangular. In addition, as shown in FIG. 3C, the cross-sectional shape of the protrusion 310 may be elliptical or circular. That is, the surface of the protrusion 310 is curved.

As the protrusions 310 having various shapes are formed as described above, frictional force is increased to improve the user's writing feeling. In particular, when the flat panel display device as in the first and second embodiments of the present invention is mounted on a tablet PC, a writing feeling of a user using a pen, which is a positioning tool, can be improved.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that.

Therefore, it should be understood that the above-described embodiments are provided so that those skilled in the art can fully understand the scope of the present invention. Therefore, it should be understood that the embodiments are to be considered in all respects as illustrative and not restrictive, The invention is only defined by the scope of the claims.

According to the exemplary embodiments of the present invention, the flat panel display device improves the user's writing feeling due to the increased frictional force caused by the protrusion.

Claims (8)

A flat panel unit for displaying an image; A coordinate input unit attached to the flat panel unit and outputting a coordinate signal corresponding to a point where the input unit contacts; And A contact portion attached to the coordinate input portion and in contact with the input means, And the contact portion includes a protrusion having the same pattern as that of the black matrix of the flat panel portion. The method of claim 1, And the flat panel unit is a liquid crystal display (LCD). The method of claim 1, And the flat panel unit is an organic EL display device (OLED). The method of claim 1, And the coordinate input unit is a touch screen. 5. The method of claim 4, And the touch screen is one of a resistive touch screen, an ultrasonic touch screen, and a capacitive touch screen. delete The method of claim 1, And a cross-sectional shape of the protrusion is polygonal. The method of claim 1, And the surface of the protrusion is curved.

Images