CN111243542A - Display device and display driving method thereof - Google Patents
Display device and display driving method thereof Download PDFInfo
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- CN111243542A CN111243542A CN202010124441.8A CN202010124441A CN111243542A CN 111243542 A CN111243542 A CN 111243542A CN 202010124441 A CN202010124441 A CN 202010124441A CN 111243542 A CN111243542 A CN 111243542A
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- 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
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/28—Digital stores in which the information is moved stepwise, e.g. shift registers using semiconductor elements
Abstract
The invention provides a display device and a display driving method thereof. The display device comprises a source electrode driving unit and a liquid crystal display panel; the source electrode driving unit receives a control signal, controls the gated channel to output an alternating current driving signal according to the control signal, and outputs a common electrode signal through the non-gated channel; the liquid crystal display panel is connected with the channel of the source electrode driving unit, receives an alternating current driving signal in a gated channel and receives a common electrode signal in an ungated channel so as to drive liquid crystal in the liquid crystal display panel to display. Even if unknown abnormity occurs, the ungated channel outputs constant common electrode signal voltage, and the differential pressure of the liquid crystal in the corresponding channel area in the display panel is 0V, so that the liquid crystal molecules cannot be polarized, abnormal display is avoided, and the display reliability is improved.
Description
Technical Field
The invention relates to the technical field of mask plate defect detection, in particular to a display device and a display driving method thereof.
Background
In the field of display technology, liquid crystal panels need to be driven by ac voltage due to liquid crystal characteristics and manufacturing process. The long-term DC voltage drives the liquid crystal, which changes the characteristics of the liquid crystal molecules and makes the residual ions inside the panel gather at the two ends of the liquid crystal molecules, thereby forming a built-in electric field. This causes polarization of liquid crystal molecules, and the polarized liquid crystal molecules display different brightness by inputting the same driving voltage, resulting in abnormal display.
The voltage for driving the liquid crystal molecules is provided by a Source Driver IC (Source Driver IC), and the ac driving of the Source Driver IC is controlled by a timing control IC (TCON IC) generating a specific control signal. However, in order to meet the requirements of each resolution panel, a source driver chip often performs a design with compatible number of output channels (also called channels, channels), and sets how many output channels need to be gated by external logic control or a timing control chip sending a command. The used output channel generates a specific control signal by the time sequence control chip to enable the source electrode driving chip to realize the positive and negative polarity alternating current driving of the liquid crystal molecules. The unused output channel is in a high impedance state (Hi-Z). The output level of the corresponding output channel is unknown, usually in a no-output state, and the voltage is 0V, which may cause the liquid crystal molecules to be in a dc driving state for a long time, and cause the liquid crystal polarization to be abnormal. In addition, under specific conditions, such as abnormal data signal output of the time sequence control chip, external interference of a driving system, and external interference of the source driving chip, channel selection is wrong, so that part of unused channels are in a high-resistance state (Hi-Z), namely, a control-free state, liquid crystal molecules are driven by direct-current voltage to be polarized, and brightness difference exists in partial area display of a panel.
In summary, when some channels are selected by the conventional source driver chip incorrectly or not used, the liquid crystal molecules corresponding to the channels are driven by the dc voltage to be polarized, thereby causing the brightness difference.
Disclosure of Invention
The invention provides a display device and a display driving method thereof, which solve the technical problem that when some channels are selected by mistake or not used in the display driving process of the conventional display device, liquid crystal molecules corresponding to the channels are polarized by being driven by direct-current voltage, so that the brightness difference is caused.
In view of the above technical problems, the present invention provides a display device including a source driver IC (source driver IC) and a liquid crystal display panel. The Source Driver IC receives a control signal, controls the gated channel to output an alternating current driving signal according to the control signal, and controls the ungated channel to output a common electrode signal (VCOM); the liquid crystal display panel is connected with the channel of the Source Driver IC, receives the alternating current driving signal in the gated channel and receives the common electrode signal (VCOM) in the non-gated channel to drive the liquid crystal therein for displaying.
Furthermore, the display device further comprises a time sequence controller (TCON IC) for generating a control signal, and the output end of the TCON IC is connected with the Source Driver IC.
Further, the Source Driver IC includes a high resistance Channel logic control module 21, and the alternating current driving signal is output to the liquid crystal display panel according to a Channel that is controlled to be gated by a preset Channel division (Channel section), and the common electrode signal (VCOM) is output to the liquid crystal display panel by a Channel that is not gated.
Furthermore, the Source Driver IC further comprises a data receiving module (RX), the data receiving module (RX) is connected to an output end of the timing controller (TCON IC), and sends the ac driving signal according to the control signal; the output end of the data receiving module (RX) is connected to the high impedance channel logic control module 21.
Further, the Source Driver IC further includes a shift register module, a digital set latch, a digital-to-analog converter (DAC), and an output buffer; the shift register module is connected with the data receiving module (RX) and the high-resistance state channel logic control module 21; said digital set latch being connected to said data reception module (RX); the digital-to-analog converter (DAC) is connected with the digital set latch; the output buffer is connected to the digital-to-analog converter (DAC).
Further, the high-resistance channel logic control module 21 includes a logic control circuit and a switch circuit; the logic control circuit is communicated with a Channel selection register (ChannelSEL), and the Channel selection register (ChannelSEL) is used for identifying the logic value operation of the logic control circuit to obtain a switch control signal; the input end of the switch circuit is connected with the logic control circuit and the common electrode signal (VCOM) and is used for controlling the output connection of the channel according to the switch control signal.
Further, the switch circuit comprises a plurality of transistor switches, and each transistor switch is correspondingly connected with each channel; when the transistor switch is connected, the channel is in an ungated state, and the ungated channel outputs the common electrode signal (VCOM) to the liquid crystal display panel; when the transistor switch is switched off, the channel is in a gating state, and the alternating current driving signal is output to the liquid crystal display panel through the gated channel.
Further, when the control signal is equal to "1", the transistor switch is turned on, and the common electrode signal (VCOM) passes through the transistor switch; when the control signal is equal to "0", the transistor switch is turned off, and the common electrode signal (VCOM) is turned off by the transistor switch.
The invention also provides a display driving method of the display device, which comprises the following steps:
acquiring a channel of the display device and receiving a control signal;
controlling the gated channel to output an alternating current driving signal according to the control signal, and controlling the ungated channel to output a common electrode signal (VCOM); and
the AC drive signal is received at a gated channel and the common electrode signal (VCOM) is received at an ungated channel to drive liquid crystals therein for display.
Further, the step of controlling the gated channel to output the ac driving signal according to the control signal, and the step of outputting a common electrode signal (VCOM) by the ungated channel includes:
identifying the logic value of the control signal and calculating to obtain a switch control signal, wherein the switch control signal controls the switch control signal to be changed from an ungated state to a gated state in sequence according to the sequence of the channel; and
controlling output connection of a channel according to the switch control signal, wherein when the channel is in an ungated state, the ungated channel outputs the common electrode signal (VCOM) to the liquid crystal display panel; and when the channel is in a gating state, the gated channel outputs the alternating current driving signal and inputs the alternating current driving signal to the liquid crystal display panel.
The invention provides a display device and a display driving method thereof.A high-resistance Channel (Hi-Z Channel) control module is added in a source driver IC (Source driver IC) logic control module, a Channel which is controlled to be gated according to preset Channel division (Channel section) outputs an alternating current driving signal to a liquid crystal display panel, and a Channel which is not gated outputs a common electrode signal (VCOM) to the liquid crystal display panel. Even if an unknown abnormality occurs, the ungated channel outputs a constant common electrode signal (VCOM) voltage, and the voltage difference of the liquid crystal in the corresponding channel region inside the display panel is 0V, so that the liquid crystal molecules are not polarized. The invention prevents the liquid crystal molecules from being polarized, avoids the display abnormity and improves the display reliability of the liquid crystal panel.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a driving structure of the display device according to the embodiment of the invention;
FIG. 3 is a schematic diagram of waveforms of AC driving signals output by a conventional source driving unit;
fig. 4 is a schematic waveform diagram of the ac driving signal output by the source driving unit according to the present embodiment;
fig. 5 is a schematic connection diagram of the high resistance channel logic control module according to the embodiment of the present invention.
The components in the figure are identified as follows:
1. a timing controller 2, a source driving unit 3, a liquid crystal display panel 10, a display device,
21. a high resistance state channel logic control module 22, a data receiving module 23, a shift register module,
24. digital set latch, 25, digital-to-analog converter, 26, output buffer,
211. logic control circuit, 212, switch circuit, 2121, transistor switch.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
Referring to fig. 1 and 2, an embodiment 1 of the invention provides a display device 10, which includes a Source Driver IC (Source Driver IC) 2 and a liquid crystal display panel 3. The Source Driver IC 2 receives a control signal, and controls the gated channel to output an ac driving signal according to the control signal, and the gated channel outputs a common electrode signal (VCOM); the lcd panel 3 is connected to the Source Driver IC (Source Driver IC) channel, and receives the ac driving signal in the gated channel and the common electrode signal (VCOM) in the non-gated channel to drive the liquid crystal therein for displaying.
In this embodiment, the Source Driver IC (Source Driver IC) controls the gated Channel to output the ac driving signal to the lcd panel 3 according to the control signal of the preset Channel division (Channel section), and the un-gated Channel outputs the common electrode signal (VCOM) to the lcd panel 3. Even if unknown abnormity occurs, the ungated channel outputs constant common electrode signal (VCOM) voltage, and the differential pressure of the liquid crystal in the corresponding channel region in the display panel is 0V, so that liquid crystal molecules cannot be polarized, the liquid crystal molecules are prevented from being polarized, abnormal display is avoided, and the display reliability of the liquid crystal panel is improved.
In this embodiment, the display device 10 further includes a timing controller 1(TCON IC) for generating a control signal, and an output terminal of the TCON IC is connected to the Source Driver IC 2. In other embodiments, the control signal may also be provided by an external logic setting circuit.
In this embodiment, the Source Driver IC 2 includes a high-resistance Channel logic control module 21, and controls a gated Channel according to a preset Channel division (Channel section) to output the ac driving signal to the lcd panel 3, and an un-gated Channel outputs the common electrode signal (VCOM) to the lcd panel 3.
Specifically, referring to fig. 3 and 4, fig. 3 is a schematic diagram of an ac driving signal waveform output by the conventional source driving unit 2, where the ac driving signal waveform shown in fig. 3 is in a no-output state in an initial state, and has a signal voltage of 0v, and forms a 0v linear waveform with time t, and when the ac driving signal is in an output state, the signal voltage gradually increases from 0v to a voltage of a common electrode signal (VCOM); since the voltage is 0v when the ac driving signal is not output, the liquid crystal molecules are in the dc driving state for a long time, and the polarization of the liquid crystal is abnormal. Fig. 4 is a schematic diagram of the ac driving signal waveform outputted by the source driving unit 2 according to the present embodiment, which mainly represents the waveform variation corresponding to the high-impedance channel, and the ac driving signal waveform shown in fig. 3 outputs a constant common electrode signal (VCOM) voltage in the initial state, and forms a constant common electrode signal (VCOM) voltage straight waveform with the variation of time t, and then the signal voltage thereof gradually increases from the constant common electrode signal (VCOM) voltage to a constant voltage, which is preferably twice the voltage of the common electrode signal (VCOM); by outputting a constant common electrode signal (VCOM) voltage in the channel, even if an unknown abnormality occurs, the un-gated channel outputs a constant common electrode signal (VCOM) voltage, and the voltage difference of the liquid crystal corresponding to the channel region in the display panel is 0V, so that the liquid crystal molecules are not polarized.
Referring to fig. 2, in the present embodiment, the Source Driver IC 2 further includes a data receiving module 22(RX), and the data receiving module 22(RX) is connected to an output end of the timing controller 1(TCON IC) and sends the ac driving signal according to the control signal; the output end of the data receiving module 22(RX) is connected to the high impedance state channel logic control module 21.
Referring to fig. 2, in the present embodiment, the Source Driver IC 2 further includes a shift register module 23, a digital set latch 24, a digital-to-analog converter 25(DAC) and an output buffer 26; the shift register module 23 is connected to the data receiving module 22(RX) and the high resistance state channel logic control module 21; said digital set latch 24 is connected to said data reception module 22 (RX); said digital-to-analog converter 25(DAC) is connected to said digital set-latch 24; the output buffer 26 is connected to the digital-to-analog converter 25 (DAC).
Referring to fig. 5, in the present embodiment, the high resistance channel logic control module 21 includes a logic control circuit 211 and a switch circuit 212; the logic control circuit 211 is communicated with a Channel selection register (Channel SEL), and the Channel selection register (Channel SEL) is used for identifying the logic value operation of the logic control circuit 211 to obtain a switch control signal; the input terminal of the switch circuit 212 is connected to the logic control circuit 211 and the common electrode signal (VCOM), and is configured to control the output connection of the channel according to the switch control signal.
Referring to fig. 5, in the present embodiment, the switch circuit 212 includes a plurality of transistor switches 2121, and each transistor switch 2121 is correspondingly connected to each channel; when the transistor switch 2121 is turned on, the channel is in an ungated state, and the ungated channel outputs the common electrode signal (VCOM) to the liquid crystal display panel 3; when the transistor switch 2121 is turned off, the channel is in a gating state, and the gated channel outputs the ac driving signal to the liquid crystal display panel 3.
In this embodiment, when the control signal is equal to "1", the transistor switch 2121 is turned on, and the common electrode signal (VCOM) passes through the transistor switch 2121; when the control signal is equal to "0", the transistor switch 2121 is turned off, and the common electrode signal (VCOM) is turned off by the transistor switch 2121.
The present invention further provides a display driving method of the display device 10, which includes the following steps:
acquiring a channel of the display device 10 and receiving a control signal;
controlling the gated channel to output an alternating current driving signal according to the control signal, and controlling the ungated channel to output a common electrode signal (VCOM); and
the AC drive signal is received at a gated channel and the common electrode signal (VCOM) is received at an ungated channel to drive liquid crystals therein for display.
In this embodiment, the step of controlling the gated channel to output the ac driving signal according to the control signal, and the step of outputting a common electrode signal (VCOM) by the ungated channel includes:
identifying the logic value of the control signal and calculating to obtain a switch control signal, wherein the switch control signal controls the switch control signal to be changed from an ungated state to a gated state in sequence according to the sequence of the channel; and
controlling the output connection of the channel according to the switch control signal, when the channel is in an ungated state, the ungated channel outputs the common electrode signal (VCOM) to the liquid crystal display panel 3; when the channel is in the gating state, the gated channel outputs the alternating current driving signal to the liquid crystal display panel 3.
In the step of controlling the switching control signal to change from the non-gated state to the gated state in sequence according to the sequence of the channels, the switching control signal is specifically changed according to the sequence in the following table 1.
TABLE 1
When the channel selection register is N, the switch control signals E (N) to E (N + M) are all '1'; (N +1) - (N + M) th channel outputs are connected to the common electrode signal (VCOM) voltage; when the channel selection register is N + N (N is more than or equal to 1), the switch control signals E (N + N) to E (N + M) are all 1', and the (N + N) - (N + M) th channel outputs a voltage communicated to the common electrode signal (VCOM); and so on.
The invention provides a display device and a display driving method thereof.A high-resistance Channel (Hi-Z Channel) control module is added in a source driver IC (Source driver IC) logic control module, a Channel which is controlled to be gated according to preset Channel division (Channel section) outputs an alternating current driving signal to a liquid crystal display panel, and a Channel which is not gated outputs a common electrode signal (VCOM) to the liquid crystal display panel. Even if an unknown abnormality occurs, the ungated channel outputs a constant common electrode signal (VCOM) voltage, and the voltage difference of the liquid crystal in the corresponding channel region inside the display panel is 0V, so that the liquid crystal molecules are not polarized. The invention prevents the liquid crystal molecules from being polarized, avoids the display abnormity and improves the display reliability of the liquid crystal panel.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A display device, comprising:
the source electrode driving unit receives a control signal, controls the gated channel to output an alternating current driving signal according to the control signal, and outputs a common electrode signal through the non-gated channel; and
and the liquid crystal display panel is connected with the channel of the source electrode driving unit, receives the alternating current driving signal in the gated channel and receives the common electrode signal in the non-gated channel so as to drive the liquid crystal in the liquid crystal display panel to display.
2. The display device according to claim 1, further comprising:
and the time schedule controller is used for generating a control signal, and the output end of the time schedule controller is connected with the source electrode driving unit.
3. The display device according to claim 1, wherein the source driving unit comprises:
and the high-resistance state channel logic control module is used for dividing and controlling the channels which are gated according to preset channels to output the alternating current driving signals to the liquid crystal display panel, and the channels which are not gated output the common electrode signals to the liquid crystal display panel.
4. The display device according to claim 3, wherein the source driving unit further comprises:
the data receiving module is connected with the output end of the time schedule controller and sends the alternating current driving signal according to the control signal; and the output end of the data receiving module is connected with the high-resistance state channel logic control module.
5. The display device according to claim 4, wherein the source driving unit further comprises:
the shift register module is connected with the data receiving module and the high-resistance state channel logic control module;
the digital set latch is connected with the data receiving module;
a digital-to-analog converter connected to the digital set latch; and
and the output buffer is connected with the digital-to-analog converter.
6. The display device according to claim 3, wherein the high resistance state channel logic control module comprises:
the logic control circuit is communicated with a channel selection register, and the channel selection register is used for identifying the logic value operation of the logic control circuit to obtain a switch control signal; and
and the input end of the switch circuit is in signal connection with the logic control circuit and the common electrode and is used for controlling the output connection of the channel according to the switch control signal.
7. The display device according to claim 6,
the switch circuit comprises a plurality of transistor switches, and each transistor switch is correspondingly connected with each channel;
when the transistor switch is communicated, the channel is in an ungated state, and the ungated channel outputs the common electrode signal to the liquid crystal display panel;
when the transistor switch is switched off, the channel is in a gating state, and the alternating current driving signal is output to the liquid crystal display panel through the gated channel.
8. The display device according to claim 7,
when the control signal is equal to '1', the transistor switch is communicated, and the common electrode signal passes through the transistor switch;
when the control signal is equal to "0", the transistor switch is turned off, and the common electrode signal is turned off by the transistor switch.
9. A display driving method of a display device according to any one of claims 1 to 8, comprising the steps of:
acquiring a channel of the display device and receiving a control signal;
controlling the gated channel to output an alternating current driving signal according to the control signal, and outputting a common electrode signal by the non-gated channel; and
and receiving the alternating current driving signal at a gated channel and receiving the common electrode signal at an ungated channel to drive liquid crystal in the liquid crystal display.
10. The display driving method of a display device according to claim 9, wherein the controlling the gated channels to output the ac driving signals according to the control signals, and the non-gated channels to output the common electrode signals comprises:
identifying the logic value of the control signal and calculating to obtain a switch control signal, wherein the switch control signal controls the switch control signal to be changed from an ungated state to a gated state in sequence according to the sequence of the channel; and
controlling the output connection of a channel according to the switch control signal, and outputting the common electrode signal to the liquid crystal display panel by the ungated channel when the channel is in an ungated state; and when the channel is in a gating state, the gated channel outputs the alternating current driving signal and inputs the alternating current driving signal to the liquid crystal display panel.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1892786A (en) * | 2005-06-28 | 2007-01-10 | Lg.菲利浦Lcd株式会社 | Liquid crystal display of line on glass type |
| CN101726896A (en) * | 2008-10-30 | 2010-06-09 | 乐金显示有限公司 | Liquid crystal display |
| CN101995722A (en) * | 2009-08-10 | 2011-03-30 | 乐金显示有限公司 | Liquid crystal display |
| CN104571755A (en) * | 2013-10-29 | 2015-04-29 | 乐金显示有限公司 | Display device with integrated touch panel and driving method thereof |
| CN105161068A (en) * | 2015-10-19 | 2015-12-16 | 昆山龙腾光电有限公司 | Driving chip for display device and display device |
| JP2018037477A (en) * | 2016-08-30 | 2018-03-08 | 京セラディスプレイ株式会社 | Dot matrix type display device |
| CN107909979A (en) * | 2017-12-08 | 2018-04-13 | 南京中电熊猫平板显示科技有限公司 | Liquid crystal display device and the method for improving display panel power down splashette |
-
2020
- 2020-02-27 CN CN202010124441.8A patent/CN111243542A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1892786A (en) * | 2005-06-28 | 2007-01-10 | Lg.菲利浦Lcd株式会社 | Liquid crystal display of line on glass type |
| CN100508011C (en) * | 2005-06-28 | 2009-07-01 | 乐金显示有限公司 | Liquid crystal display of line on glass type |
| CN101726896A (en) * | 2008-10-30 | 2010-06-09 | 乐金显示有限公司 | Liquid crystal display |
| CN101995722A (en) * | 2009-08-10 | 2011-03-30 | 乐金显示有限公司 | Liquid crystal display |
| CN104571755A (en) * | 2013-10-29 | 2015-04-29 | 乐金显示有限公司 | Display device with integrated touch panel and driving method thereof |
| CN105161068A (en) * | 2015-10-19 | 2015-12-16 | 昆山龙腾光电有限公司 | Driving chip for display device and display device |
| JP2018037477A (en) * | 2016-08-30 | 2018-03-08 | 京セラディスプレイ株式会社 | Dot matrix type display device |
| CN107909979A (en) * | 2017-12-08 | 2018-04-13 | 南京中电熊猫平板显示科技有限公司 | Liquid crystal display device and the method for improving display panel power down splashette |
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Application publication date: 20200605 |