CN202075966U - LCD control circuit and LCD employing same - Google Patents
LCD control circuit and LCD employing same Download PDFInfo
- Publication number
- CN202075966U CN202075966U CN201020513961XU CN201020513961U CN202075966U CN 202075966 U CN202075966 U CN 202075966U CN 201020513961X U CN201020513961X U CN 201020513961XU CN 201020513961 U CN201020513961 U CN 201020513961U CN 202075966 U CN202075966 U CN 202075966U
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- eeprom
- control circuit
- lcd
- liquid crystal
- crystal display
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Abstract
The embodiment of the utility model provides an LCD (Liquid Crystal Display) control circuit and an LCD employing the same, relates to the field of electronics, solves the problem that EDID (Extended Display Identification Data) and EEPROM (Electrically Erasable Programmable Read-Only Memory) data in the prior art use two IC chips respectively, and enables that the EDID and the EEPROM data share the same IC chip. The LCD control circuit comprises an EEPROM, a time schedule controller electrically connected with the EEPROM, and a connector electrically connected with both the EEPROM and a motherboard. The embodiment of the utility model is used for LCD control.
Description
Technical field
The utility model relates to electronic applications, the LCD that relates in particular to a kind of liquid crystal display control circuit and have this circuit.
Background technology
Current liquid crystal display control circuit, EDID (Extended Display IdentificationData, the extending display identification data) and EEPROM (Electrically ErasableProgrammable Read-Only Memory, EEPROM (Electrically Erasable Programmable Read Only Memo)) two IC (Integrated Circuit, integrated circuit) chip of 2K and 16K is used in the storage of data respectively.Start back mainboard reads the EDID data from an IC chip, TCON (TimerControl Register, time schedule controller) reads the EEPROM data from another IC chip.
As shown in Figure 1, 2, Fig. 1 is the circuit of access EEPROM data, wherein, IC 101 is the eeprom chip of a 16K, be used to store the EEPROM data, start back TCON102 reads the EEPROM data from IC 101, and resistance 103 is the required controlling resistances of IC 101.Fig. 2 is the circuit of access EDID, and wherein, IC 201 is the eeprom chip of a 2K, is used to store EDID, and start back mainboard reads EDID by connector 202 from IC 201, and resistance 203 is the required controlling resistances of IC 201.
The inventor finds that the EDID valid data that use now have only 256, and the EEPROM data also have only the 2K position.Use different IC chips respectively, cause very big waste, and increased raw data burning operation.
The utility model content
The LCD that embodiment of the present utility model provides a kind of liquid crystal display control circuit and has this circuit, solved the problem that two IC chips are used in the access of EDID and EEPROM data in the prior art respectively, made the access shared IC chip of EDID and EEPROM data.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
The utility model embodiment provides a kind of liquid crystal display control circuit, comprising:
EEPROM (Electrically Erasable Programmable Read Only Memo); With
The time schedule controller that is electrically connected with described EEPROM (Electrically Erasable Programmable Read Only Memo); With
With the connector that described EEPROM (Electrically Erasable Programmable Read Only Memo) is electrically connected, described connector is electrically connected with mainboard.
Described liquid crystal display control circuit also comprises: the controlling resistance that is electrically connected with described EEPROM (Electrically Erasable Programmable Read Only Memo).
The utility model embodiment also provides a kind of LCD with above-mentioned liquid crystal display control circuit, and described liquid crystal display control circuit comprises:
EEPROM (Electrically Erasable Programmable Read Only Memo); With
The time schedule controller that is electrically connected with described EEPROM (Electrically Erasable Programmable Read Only Memo); With
With the connector that described EEPROM (Electrically Erasable Programmable Read Only Memo) is electrically connected, described connector is electrically connected with mainboard.
Described liquid crystal display control circuit also comprises: the controlling resistance that is electrically connected with described EEPROM (Electrically Erasable Programmable Read Only Memo).
Liquid crystal display control circuit that the utility model embodiment provides and the LCD with this circuit comprise: EEPROM, and with the TCON that is connected with this EEPROM, and the connector that is connected with this EEPROM, and this connector links to each other with mainboard.Like this, just make that the access of EDID and EEPROM data can a shared IC chip (being EEPROM), solved the problem that EDID and EEPROM data in the prior art use two IC chips respectively, reduced the usage quantity of IC chip, reduce the cost of circuit, also reduced the burning work of raw data simultaneously.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the control circuit of access EEPROM data in the prior art;
Fig. 2 is the control circuit of access EDID in the prior art;
The liquid crystal display control circuit that Fig. 3 provides for the utility model embodiment;
The structural representation block diagram of the LCD that Fig. 4 provides for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The liquid crystal display control circuit that the utility model embodiment provides as shown in Figure 3, comprising:
EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM), i.e. IC among Fig. 3 301; With
The TCON 303 that is electrically connected with this IC 301 (EEPROM); And
With the connector 302 that this IC 301 (EEPROM) is electrically connected, this connector 302 is electrically connected with mainboard (not showing among Fig. 3).
Concrete, that the IC 301 in the present embodiment adopts is the EEPROM (24LC 16) of 16K.Need to prove that the size of IC 301 is not limited to this, it is fixed to come according to the function of using TCON.
The concrete connected mode of TCON 303 and IC 301 (EEPROM) is identical with the connected mode of prior art, and also the connected mode with prior art is identical for the concrete connected mode of connector 302 and IC 301 (EEPROM).
In IC 301 (EEPROM), can preset 00H to 7FH position storage EDID, 80H is to 87FH position storage EEPROM data.Certainly, this storage mode is just given an example for one of present embodiment, and present embodiment is not limited to this, and other storage mode also can.
After panel (Panel) powers on, can from IC 301 (EEPROM), read EDID by connector 302 by mainboard earlier, from IC 301 (EEPROM), read the EEPROM data by TCON 303 again by sequential control.At this moment, the start bit that mainboard and TCON 303 read can be set be respectively 00H and 80H, so just realize in an IC chip, distinguishing the purpose of EDID and EEPROM data.
Certainly, the order of reading of data also can be from IC 301: read the EEPROM data by TCON earlier, read EDID by mainboard by connector 302 again.At this moment, need corresponding adjustment Reset sequential control.
In addition, this liquid crystal display control circuit also comprises: the controlling resistance 304 that is electrically connected with IC 301 (EEPROM).The connected mode of controlling resistance 304 is same as the prior art, and for example, resistance R 13, R14 are protective resistance among Fig. 3, ground connection or connect height; Resistance R 15, R16 are connected on the clock line of IC 301; Resistance R 17, R18 are connected on the data line of IC 301.
The liquid crystal display control circuit that the utility model embodiment provides comprises: EEPROM, and with the TCON that is connected with this EEPROM, and the connector that is connected with this EEPROM, and this connector links to each other with mainboard.Like this, just make that the access of EDID and EEPROM data can a shared IC chip (being EEPROM), solved the problem that EDID and EEPROM data in the prior art use two IC chips respectively, reduced the usage quantity of IC chip, reduce the cost of circuit, also reduced the burning work of raw data simultaneously.
The utility model embodiment provides LCD 40, as shown in Figure 4, comprises liquid crystal display control circuit 401, and this liquid crystal display control circuit comprises:
EEPROM; With the TCON that is connected with this EEPROM; And the connector that is connected with this EEPROM, this connector is connected with mainboard.
The concrete connection of this liquid crystal display control circuit with read control same as the previously described embodiments, do not repeat them here.
The LCD that the utility model embodiment provides, comprise liquid crystal display control circuit, this liquid crystal display control circuit comprises: EEPROM and the TCON that is connected with this EEPROM and the connector that is connected with this EEPROM, and this connector links to each other with mainboard.Like this, just make that the access of EDID and EEPROM data can a shared IC chip (being EEPROM), solved the problem that EDID and EEPROM data in the prior art use two IC chips respectively, reduced the usage quantity of IC chip, reduce the cost of circuit, also reduced the burning work of raw data simultaneously.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of programmed instruction, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (4)
1. a liquid crystal display control circuit is characterized in that, comprising:
EEPROM (Electrically Erasable Programmable Read Only Memo); With
The time schedule controller that is electrically connected with described EEPROM (Electrically Erasable Programmable Read Only Memo); With
With the connector that described EEPROM (Electrically Erasable Programmable Read Only Memo) is electrically connected, described connector is electrically connected with mainboard.
2. liquid crystal display control circuit according to claim 1 is characterized in that, described liquid crystal display control circuit also comprises: the controlling resistance that is electrically connected with described EEPROM (Electrically Erasable Programmable Read Only Memo).
3. the LCD with the described liquid crystal display control circuit of claim 1 is characterized in that, described liquid crystal display control circuit comprises:
EEPROM (Electrically Erasable Programmable Read Only Memo); With
The time schedule controller that is electrically connected with described EEPROM (Electrically Erasable Programmable Read Only Memo); With
With the connector that described EEPROM (Electrically Erasable Programmable Read Only Memo) is electrically connected, described connector is electrically connected with mainboard.
4. LCD according to claim 3 is characterized in that, described liquid crystal display control circuit also comprises: the controlling resistance that is electrically connected with described EEPROM (Electrically Erasable Programmable Read Only Memo).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020513961XU CN202075966U (en) | 2010-09-01 | 2010-09-01 | LCD control circuit and LCD employing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020513961XU CN202075966U (en) | 2010-09-01 | 2010-09-01 | LCD control circuit and LCD employing same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202075966U true CN202075966U (en) | 2011-12-14 |
Family
ID=45114059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020513961XU Expired - Lifetime CN202075966U (en) | 2010-09-01 | 2010-09-01 | LCD control circuit and LCD employing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202075966U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014121470A1 (en) * | 2013-02-05 | 2014-08-14 | 深圳市华星光电技术有限公司 | Driving method for liquid crystal display and liquid crystal display control circuit using the method |
-
2010
- 2010-09-01 CN CN201020513961XU patent/CN202075966U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014121470A1 (en) * | 2013-02-05 | 2014-08-14 | 深圳市华星光电技术有限公司 | Driving method for liquid crystal display and liquid crystal display control circuit using the method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20150709 Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20150709 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150709 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE Technology Group Co., Ltd. Patentee after: Beijing BOE Photoelectricity Science & Technology Co., Ltd. Address before: 100176 Beijing economic and Technological Development Zone, West Central Road, No. 8 Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111214 |