KR20080104638A - Liquid crystal display and method of dirving the same - Google Patents

Liquid crystal display and method of dirving the same Download PDF

Info

Publication number
KR20080104638A
KR20080104638A KR1020070051670A KR20070051670A KR20080104638A KR 20080104638 A KR20080104638 A KR 20080104638A KR 1020070051670 A KR1020070051670 A KR 1020070051670A KR 20070051670 A KR20070051670 A KR 20070051670A KR 20080104638 A KR20080104638 A KR 20080104638A
Authority
KR
South Korea
Prior art keywords
scanning
liquid crystal
data
signal
driver
Prior art date
Application number
KR1020070051670A
Other languages
Korean (ko)
Inventor
안충환
최락우
Original Assignee
엘지디스플레이 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 엘지디스플레이 주식회사 filed Critical 엘지디스플레이 주식회사
Priority to KR1020070051670A priority Critical patent/KR20080104638A/en
Publication of KR20080104638A publication Critical patent/KR20080104638A/en

Links

Images

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3674—Details of drivers for scan electrodes
    • G09G3/3677—Details of drivers for scan electrodes suitable for active matrices only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0264—Details of driving circuits
    • G09G2310/0291—Details of output amplifiers or buffers arranged for use in a driving circuit
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/08—Details of timing specific for flat panels, other than clock recovery
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0252—Improving the response speed
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/12—Frame memory handling

Abstract

The present invention relates to a liquid crystal display device.

The liquid crystal display according to the present invention includes a liquid crystal panel including a light receiving sensor for generating a scanning signal according to the reflected light of a subject, a data driver and a gate driver for controlling the liquid crystal panel for a display function, and scanning for operation of a scanning mode. A mode selector, a data selector included in the scanning mode driver and configured to select a scanning signal output from several subpixels among the subpixels of the liquid crystal panel, and for controlling the data drive, gate drive, and scanning mode driver A timing controller, a mode selector for selecting a display mode and a scanning mode and controlling the timing controller accordingly, and a frame memory for storing scanning signals for each frame.

Description

Liquid crystal display device and driving method thereof {Liquid Crystal Display And Method Of Dirving The Same}

1 is a view showing a conventional liquid crystal display device.

2 is a cross-sectional view of a liquid crystal panel including a scanning function.

3 is a block diagram showing a liquid crystal display device according to the present invention;

4 is a view showing a liquid crystal cell of a liquid crystal display according to the present invention.

5 is a diagram illustrating extracting a scanning signal according to the present invention;

<Description of Symbols for Main Parts of Drawings>

2, 102 liquid crystal panel 4, 104 data driver

6, 106: gate driver 115: storage capacitor

108: timing controller 120: scanning mode driver

122: data selection unit 124: readout circuit unit

126: amplifier 128: analog-to-digital converter

130: frame memory 140: position detector

The present invention relates to a liquid crystal display device, and more particularly, to a liquid crystal display device performing a touch panel type function using a scanning mode.

A typical liquid crystal display device is a display device that displays an image by adjusting the light transmittance of a liquid crystal using an electric field.

To this end, the liquid crystal display device includes a liquid crystal panel 2 having liquid crystal cells arranged in a matrix form as shown in FIG. 1, and a gate driver for driving gate lines GL1 to GLn of the liquid crystal panel 2. 6), a data driver 4 for driving the data lines DL1 to DLm of the liquid crystal panel 2, and a timing controller 8 for controlling the gate driver 6 and the data driver 4. Equipped.

The liquid crystal panel 2 includes a thin film transistor TFT formed at each intersection of the gate lines GL1 to GLn and the data lines DL1 to DLm, and a liquid crystal cell 7 connected to the thin film transistor TFT. do. The thin film transistor TFT is turned on when the scan signal from the gate line GL, that is, the gate high voltage VGH is supplied, and supplies the pixel signal from the data line DL to the liquid crystal cell 7. The thin film transistor TFT is turned off when the gate low voltage VGL is supplied from the gate line GL to maintain the pixel signal charged in the liquid crystal cell 7.

The liquid crystal cell 7 is equivalently represented by a liquid crystal capacitor, and includes a common electrode facing each other with a liquid crystal interposed therebetween and a pixel electrode connected to a thin film transistor TFT. The liquid crystal cell 7 further includes a storage capacitor so that the charged pixel signal is stably maintained until the next pixel signal is charged. This storage capacitor is formed between the pixel electrode and the previous gate line. The liquid crystal cell 7 realizes gradation by adjusting light transmittance by varying an arrangement state of liquid crystals having dielectric anisotropy according to pixel signals charged through thin film transistors (TFTs).

As described above, the liquid crystal display device is a display device that displays an image by using light passing through the liquid crystal. However, as the application range of the display device increases, a liquid crystal display device having various functions has emerged.

One of them is a liquid crystal display that also functions as a scan. As shown in FIG. 2, it includes a light receiving sensor 14 on the thin film transistor array substrate 10, and the light emitted from the backlight unit 12 is reflected by the subject 16 positioned on the display surface of the liquid crystal display. It uses the winry to detect the incident light. That is, the light reflected by the subject 16 varies depending on the contrast of the subject 16, and accordingly, the data voltage value generated by the light receiving sensor 14 varies according to the degree of activation of the semiconductor layer of the light receiving sensor 14. . As described above, the image of the subject 16 is scanned using a scanning signal that is a data voltage value generated for each subpixel.

The liquid crystal display device having such a scan function may be used for scanning, fingerprint recognition, and the like, and may be used for a touch panel such as a touch or a laser pointer on the display surface. For example, in the same method as the touch panel, when the panel is touched using a hand or an object, the light receiving sensor of the touch area generates a significantly different scanning signal than other areas. As such, the position of the sub-pixels generating the specific scanning signal is detected to perform the same function as the touch panel.

The process of identifying the touch area searches for the touch area by storing the scanning signal generated from each sub-pixel in the frame memory and searching the stored scanning signal. In this process, processing of a scanning signal more than necessary causes a delay in processing time and a burden on the frame memory.

Accordingly, it is an object of the present invention to provide a liquid crystal display device which can shorten the processing time and reduce the capacity of the frame memory.

In order to achieve the above object, the liquid crystal display device according to the present invention comprises a liquid crystal panel including a light receiving sensor for generating a scanning signal according to the reflected light of the subject, a data driver and a gate driver for controlling the liquid crystal panel for a display function; A scanning mode driver for scanning mode operation, a data selection unit for selecting a scanning signal included in the scanning mode driver and output from several subpixels of the subpixels of the liquid crystal panel, a data drive and a gate drive; A timing controller for controlling the scanning mode driver, a mode selector for selecting a display mode and a scanning mode and controlling the timing controller according to the present invention, and a frame memory for storing the scanning signal for each frame.

Other objects and features of the present invention in addition to the above object will be apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 3 to 5.

3 is a block diagram showing the configuration of a liquid crystal display device according to the present invention.

Referring to FIG. 3, a liquid crystal display according to the present invention includes a liquid crystal panel 102 in which liquid crystal cells are arranged in a matrix, a gate driver 106 for driving gate lines of the liquid crystal panel 102, and a liquid crystal panel. A data driver 104 for driving the data lines of 102 and a timing controller 108 for controlling the gate driver 106 and the data driver 104. In addition, a data selector 122 for driving a scanning mode, a read out integrated circuit (ROIC) 124, an amplifier 126, and an analog-to-digital converter (ADC) And a scanning mode driver 120 including 128.

The liquid crystal panel 102 includes a plurality of liquid crystal cells in a matrix form formed at each intersection of the gate lines GL1 to GLn and the data lines DL1 to DLm. 2 is an equivalent circuit diagram of a liquid crystal cell of a liquid crystal panel according to the present invention. Referring to FIG. 2, the liquid crystal panel and the liquid crystal cell will be described below.

Each pixel cell defined by crossing the gate line GL and the data line DL of the liquid crystal panel is a readout line formed to face the data line DL, and a reset formed to face the gate line GL. Line and storage line.

A first thin film transistor Tr1 is provided as a switching element for implementing the display mode. The first thin film transistor Tr1 is turned on when the scan signal from the gate line GL, that is, the gate high voltage VGH is supplied, and supplies the pixel signal from the data line DL to the liquid crystal cell. When the gate low voltage VGL is supplied from the gate line GL, the first thin film transistor TFT is turned off to maintain the pixel signal charged in the liquid crystal cell.

The liquid crystal cell further includes a storage capacitor such that the charged pixel signal is stably maintained until the next pixel signal is charged. This storage capacitor is formed between the pixel electrode and the previous gate line.

The liquid crystal cell realizes gradation by adjusting the light transmittance by changing the arrangement state of the liquid crystal having dielectric anisotropy according to the pixel signal charged through the first thin film transistor Tr1.

In addition, the liquid crystal cell includes second and third thin film transistors Tr2 and Tr3 for implementing a scanning mode. The second thin film transistor Tr2 is a light receiving sensor in which the active layer is activated by incident light. The drain electrode of the second thin film transistor Tr2 and the source electrode of the third thin film transistor Tr3 which is a switching thin film transistor are electrically connected. The storage capacitor 115 is formed between the drain electrode and the gate electrode of the second thin film transistor Tr2.

As the light enters the second thin film transistor Tr2 in the scanning mode, the active layer is activated, so that more current flows in the source electrode and the drain electrode than when the scan object is not recognized.

The current flowing through the source electrode and the drain electrode of the second thin film transistor Tr2 is temporarily stored by the storage capacitor 115 and then transmitted to the third thin film transistor Tr3. The data voltage transferred from the storage capacitor 115 to the third thin film transistor Tr3 is applied to the source electrode of the third thin film transistor Tr3.

The third thin film transistor Tr3 is turned on by the gate signal applied to the gate electrode and the data voltage applied to the source electrode. When the third thin film transistor Tr3 is turned on, an output voltage serving as a scanning signal is applied to the drain electrode of the third thin film transistor Tr3. The output voltage applied to the drain electrode is transferred to the readout circuit unit 124 through the readout line.

The timing controller 108 generates gate control signals GSP, GSC, and GOE and data control signals SSP, SSC, SOE, and POL using a synchronization signal supplied from a video card (not shown). The gate control signals GSP, GSC, and GOE are supplied to the gate driver 6 to control the gate driver, and the data control signals SSP, SSC, SOE, and POL are supplied to the data driver 4 to supply the data driver. To control. In addition, the timing controller 8 aligns the red (R), green (G), and blue (B) pixel data and supplies them to the data driver 4.

In addition, the timing controller 108 includes a mode selector 110 that controls timings of the gate driver 106, the data driver 104, and the readout circuit unit 124 to be driven in the display mode and the scanning mode.

That is, in the display mode, the mode selector 110 operates the gate driver 106 and the data driver 104 to display an image on the liquid crystal panel 102 from the video card, and the readout circuit unit 124 in the scanning mode. To perform the scanning function.

The gate driver 6 sequentially drives the gate lines GL1 to GLn. To this end, the gate driver 6 includes a plurality of integrated circuits (hereinafter referred to as "ICs"), and the gate ICs include gate control signals GSP, GSC, and GOE supplied from the timing controller 8. ), The gate high voltage VGH is sequentially supplied to the gate lines GL1 to GLn.

The data driver 4 supplies the pixel signals for one line to the data lines DL1 to DLm every horizontal period. For this purpose, the data driver 4 has a plurality of data ICs. The data ICs supply pixel signals to the data lines DL1 to DLm in response to the data control signals SSP, SSC, SOE, and POL supplied from the timing controller 8.

The scanning mode driver 120 includes a data selector 122, a readout circuit 124, an amplifier 126, and an analog-to-digital converter 128. A frame memory 130 for storing the scanning signal for each frame and a position detector 140 for identifying the position of the scanning signal when the touch panel function is operated are provided.

When implementing the touch panel operation using the scanning mode, the data selector 122 samples the scanning signal extracted from the liquid crystal panel 102. That is, instead of detecting the position of the touch area using the data of all subpixels, data of specific subpixels of the subpixels is extracted, and only data of the extracted subpixels is processed in a subsequent process.

For example, the data selector 122 selects and processes only data of any one of subpixels of red (R), green (G), and blue (B) three primary colors.

As shown in FIG. 3, a method of using a liquid crystal display as a touch panel method may perform a predetermined command by touching a specific command displayed on the panel, for example, a page movement mark using a hand or an object.

Since the main purpose of the touch panel operation is to determine the rough touch area and to detect the position of the touch area, data of all sub-pixels are not needed. Thus, several of the neighboring adjacent pixels can be sampled and processed. . To this end, the data selector 122 selects and processes only data voltages of specific sub-pixels among the data voltages extracted through the readout line.

That is, the data selector 122 selects only the data voltages of the red subpixels and transmits the data voltages to the readout circuit unit 124.

In this way, the data processing speed is increased because the data is selectively processed rather than the data of all sub-pixels, and the capacity of the frame memory 130 for storing data can be reduced.

The readout circuit unit 124 extracts a scanning signal that is a data voltage of specific subpixels selected by the data selector 122 in the scanning mode, and samples the extracted scanning signal according to the data clock.

The amplifier 126 is coupled to an output terminal of the readout circuit unit 124 and amplifies the offset signals of the two inputs by using the scanning signal and the reference voltage output from the readout circuit unit 124.

The analog-to-digital converter 126 converts the amplified offset signal into a digital signal and transmits it to the frame memory 130 of the timing controller 108.

The frame memory 130 stores the transmitted scanning signal in units of frames.

The position detector 140 searches for the positions of the subpixels having the scanning signals having a specific value (the scanning signal of the touch area) that is distinguished from the scanning signals of the neighboring subpixels among the scanning signals stored in the frame memory 130.

The position detector 140 looks at a method of searching for positions of subpixels having scanning signals of a specific value as follows.

The scanning signals having a specific value have different voltage values from the subpixels in other areas due to the light reflected by the object, which is the touched object. Accordingly, the position of the column on the panel of the scanning signals of a specific value has a different value with respect to the intermediate value. That is, as shown in FIG. 5, in the liquid crystal panel having m columns, the left / right scanning signals of left and right are compared based on m '(m' = m / 2) columns, and the left / right of m 'is positioned. Find out where you are. In addition, the position detector 140 searches for a specific value based on m ', which is the middle column of m', in the right column of m 'where the scanning signal of the specific value is located. In this way, the position detector 140 searches for a specific value. Determine the position of the column of subpixels with scanning signals of &lt; RTI ID = 0.0 &gt;

Similarly, the position of the row of sub-pixels having the scanning signals of a specific value is identified to identify the area where the touch operation is performed on the display surface of the panel. As such, if the corresponding area is for a function of performing a specific command by identifying an area where the touch operation has occurred, a specific operation is performed to perform a function such as a touch panel.

As such, the liquid crystal display according to the present invention including the scanning function may reduce the data processing time because the data selection unit selectively extracts and processes the scanning signal. In addition, the capacity of the frame memory for storing the scanning signal can be reduced.

In the embodiment of the present invention, a method of selectively extracting a scanning signal from the data selector has exemplified a method of extracting data of sub-pixels corresponding to any one of three primary colors.

However, there may be other methods for extracting the scanning signal from the data selector. That is, in the process of extracting data of the subpixels at intervals of n multiples, the size of n may be set according to pursuit of accuracy of positioning. For example, for more precise location determination, the scanning signals of sub-pixels located at doubled intervals may be extracted and processed. In addition, in the case where only a more coarse positioning is required, the size of n may be increased to reduce the number of extracted scanning signals, thereby speeding up data processing and reducing memory capacity.

As described above, the liquid crystal display according to the present invention can reduce the data processing time because the data selection unit selectively extracts and processes the scanning signal. In addition, the capacity of the frame memory for storing the scanning signal can be reduced.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (5)

A liquid crystal panel including a light receiving sensor for generating a scanning signal according to the reflected light of the subject; A data driver and a gate driver for controlling the liquid crystal panel for a display function; A scanning mode driver for scanning mode operation; A data selector which is included in the scanning mode driver and selects the scanning signal output from several subpixels among subpixels of the liquid crystal panel; A timing controller for controlling the data drive, the gate drive, and the scanning mode driver; A mode selection unit for selecting a display mode and a scanning mode and controlling the timing controller accordingly; And a frame memory for storing the scanning signal for each frame. The method of claim 1, The scanning mode driver A readout circuit unit which extracts the scanning signal selected by the data selector and outputs the scanned signal in a voltage form; An amplifier for amplifying the offset signals of the two inputs by inputting the scan signal and the reference voltage in the form of voltage via the readout circuit unit; An analog-digital converter for converting the offset signal through the amplifier into a digital signal; And a position detector for searching for positions of sub-pixels from which the specific scanning signals different from the reference value among the scanning signals are extracted. The method of claim 1, And the data selector selects scanning signals of sub-pixels displaying one of red, green, and blue primary colors. In the liquid crystal display including a scanning mode function, Extracting a scanning signal from each subpixel according to the contrast of the subject; Selecting a scanning signal generated from several subpixels of the subpixels; Outputting the scanning signal in the form of voltage; Amplifying the scanning signal in the form of voltage; Storing the scanning signal in a frame memory; And determining a position of a scanning signal having a specific value different from a reference value among the scanning signals stored in the frame memory. The method of claim 4, wherein The selecting of the sub-pixels among the sub-pixels comprises selecting sub-pixels representing any one of the three primary colors.
KR1020070051670A 2007-05-28 2007-05-28 Liquid crystal display and method of dirving the same KR20080104638A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020070051670A KR20080104638A (en) 2007-05-28 2007-05-28 Liquid crystal display and method of dirving the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020070051670A KR20080104638A (en) 2007-05-28 2007-05-28 Liquid crystal display and method of dirving the same

Publications (1)

Publication Number Publication Date
KR20080104638A true KR20080104638A (en) 2008-12-03

Family

ID=40366226

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020070051670A KR20080104638A (en) 2007-05-28 2007-05-28 Liquid crystal display and method of dirving the same

Country Status (1)

Country Link
KR (1) KR20080104638A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011031032A2 (en) * 2009-09-08 2011-03-17 (주)실리콘웍스 Readout integrated circuit for a touch screen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011031032A2 (en) * 2009-09-08 2011-03-17 (주)실리콘웍스 Readout integrated circuit for a touch screen
KR101040925B1 (en) * 2009-09-08 2011-06-17 한국과학기술원 Readout integrated circuit of touch screen
WO2011031032A3 (en) * 2009-09-08 2011-06-30 (주)실리콘웍스 Readout integrated circuit for a touch screen

Similar Documents

Publication Publication Date Title
US7158129B2 (en) Input device and input and output device
TWI391889B (en) Display device and driving device thereof
US20060201931A1 (en) Touch sensible display device, and driving apparatus and method thereof
US7772869B2 (en) Display device and method for testing the same
US10860134B2 (en) Display device
US8411117B2 (en) Display device having optical sensors
US20060138983A1 (en) Display device and driving apparatus thereof
KR101529288B1 (en) Display apparatus
US20140253536A1 (en) Driver ic and display-input device
US20120313913A1 (en) Display device
US20090073141A1 (en) Electro-optical device, electronic apparatus and method of detecting indicating object
KR20170123967A (en) Flexible organic light emitting display apparatus
KR101710657B1 (en) Display device and driving method thereof
US11119604B2 (en) Display device and touch sensor with accurate touch detection and low power consumption
TWI402591B (en) Active matrix display apparatus with touch sense function
US20070052874A1 (en) Display apparatus including sensor in pixel
JP2006244218A (en) Display device with built-in sensor
KR102457156B1 (en) Display apparatus having gate driving circuit and driving method thereof
TWI764448B (en) Fingerprint display device and integrated circuit and method for driving the same
US20110115724A1 (en) Display apparatus
KR20160093750A (en) Touch screen display device including fingerprint sensor
JP5407368B2 (en) Liquid crystal display device, driving method thereof and electronic apparatus
JP2007271781A (en) Display device with image capturing function
KR20160081649A (en) Gata driver and touch screen integrated display device including thereof
KR20080104638A (en) Liquid crystal display and method of dirving the same

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination