CN1204588C - Plasma dispaly - Google Patents
Plasma dispaly Download PDFInfo
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- CN1204588C CN1204588C CNB011013702A CN01101370A CN1204588C CN 1204588 C CN1204588 C CN 1204588C CN B011013702 A CNB011013702 A CN B011013702A CN 01101370 A CN01101370 A CN 01101370A CN 1204588 C CN1204588 C CN 1204588C
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- header board
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Abstract
The present invention relates to a plasma display. A plurality of pixels, a plurality of sustaining electrodes and a plurality of scanning electrodes are arranged on the plasma display. When voltage bias is additionally added between a plurality of sustaining electrodes and a plurality of scanning electrodes, a plurality of pixels can carry out discharge action. The plasma display comprises a front plate, a scanning driver, a detection collection circuit, detection conducting wires and a control circuit, wherein the front plate is provided with a first edge and a second edge, and the two edges are opposite; the scanning driver is arranged on the first edge; the detection collection circuit is arranged on the second edge; the detection conducting wires are arranged on the front plate, and each detection conducting wire have a first and a second ends; the first end is coupled with the scanning driver, and the second end is coupled with the detection collection circuit; the control circuit is coupled to the scanning driver and the detection collection circuit.
Description
Technical field
The present invention relates to a kind of glass breakage detection method and system, particularly relate to a kind of plasma scope that has glass breakage detection method and system.
Background technology
Fig. 1 represents the generalized section of cellular construction in the prior art plasma scope (Plasma Display Panel is called for short PDP).As shown in the figure, plasma scope is made up of header board (Frontsubstrate) 1 and back plate (Rear substrate) 7.On header board 1, comprise scan electrode parallel to each other (scan electrodes) Y and keep electrode (sustain electrodes) X, dielectric layer 3 and diaphragm (protective film) 5.On the plate 7 of back, comprise address electrode (address electrodes) A and the fluorescent material 9 on it.Around each unit, isolated with barrier rib (partition wall) 8.
Fig. 2 represents to utilize the calcspar of the plasma scope that PDP formed shown in Figure 1.As shown in the figure, PDP 100 is by scan electrode Y parallel to each other
1～Yn and keep electrode X
1～Xn, and drive across the address electrode (not shown) on it.In addition, plasma scope also comprises control circuit (control circuit) 110, scanner driver (Y driver) 112, keeps driver (Xdriver) 114 and address driver (not shown).Control circuit 110 is according to clock pulse signal CLOCK, data-signal DATA, vertical synchronizing signal V that the outside provided
SYNCAnd horizontal-drive signal H
SYNC, produce the needed time sequence information of each driver.Wherein time pulse signal CLOCK represents the data transmission period pulse, and data-signal DATA represents video data, vertical synchronizing signal V
SYNCWith horizontal-drive signal H
SYNCThen be in order to define the sequential of single picture frame (frame) and single scanning line (scanning line).Control circuit 110 is delivered to the address driver (not shown) with video data and time pulse, and relevant picture frame control timing is delivered to scanner driver 112 and kept driver 114 by holding wire 102.
Fig. 3 represents that prior art drives the action schematic diagram that PDP shows a picture frame (frame).As shown in the figure, each picture frame is divided into figure (sub-field) SF1～SF8 8 times.Each time figure is by forming during three operational motions, be respectively (reset period) R1～R8 during the replacement, write during (address period) A1～A8 and (sustain period) S1～S8 that holds time.During the replacement be before being used for removing once figure when showing remaining electric charge, and the wall electric charge (wall charge) that in each display unit, stays some.Then be by address discharge (addressdischarge) (promptly being the on state) accumulation wall electric charge in the display unit that needs show during writing.Then be to accumulate in the unit of wall electric charge by the address discharge, showing during keeping to keep discharge (sustaindischarge).Wherein, during the replacement R1～R8 and keep during S1～S8 be whole unit of handling simultaneously on the PDP, A1～A8 carries out write activity for each unit on each scan electrode Y1～Yn in regular turn during writing.In addition, display brightness be with keep during the length of S1～S8 be directly proportional.In the example of Fig. 3, the length of S1～S8 can be made as 1: 2: 4 during keeping among each time figure SF1～SF8: 8: 16: 32: 64: 128 ratio, realize 256 gray scales with this.
Fig. 4 represents prior art at single inferior sequential chart of scheming to keep in the field control signal on electrode X and the scan electrode Y, and the signal of wherein keeping on the electrode X is produced by keeping driver 114, and the signal on the scan electrode Y is produced by scanner driver 112.As shown in the figure, during each time figure field comprises replacement, write during and keep during.Mandatory declaration be, the drive signal waveform among the figure is an example only, the waveform in practical application is an example difference therewith, but basic principle is consistent.
PDP one is loaded with the device of high pressure (voltage reaches as high as 200 volts) drive electrode, cause header board to break if under special status, (for example suffer external force collision), cause electrode to expose and drive electrode not during shut-down operation, the danger of human body error shock will be arranged, can detect breaking and the method for operation of halt circuit of header board so be necessary to design one.
Existing about detecting the method for glass breakage, paste the detection senses device that breaks as the window face in building and break and cause alarm to record.The detection senses device is too big because of volume but this breaks, and can not be used in the slimming design of PDP display.
Summary of the invention
The object of the present invention is to provide a kind of plasma scope, its lead outside plasm display panel designs a both-end lead surface plate passes to signal specific with this lead and is also detected.Produce the exposed phenomenon of electrode if header board breaks, this electrode should open circuit immediately and make testing circuit realize that signal specific disappears, and notice control circuit shut-down operation or powered-down.This lead can be located on the header board of plasm display panel, and can make together when making electrode, need not to increase manufacturing step.
The object of the present invention is achieved like this, a kind of plasma scope promptly is provided, it is provided with a plurality of pixels, this plasma display comprises: a header board, it is provided with a plurality of electrode and a plurality of scan electrodes kept, and when this a plurality of keeping when adding a bias voltage between electrode and a plurality of scan electrode, can make these a plurality of pixels carry out discharging action, this header board also has one first limit and one second limit, and this first limit is relative with this second limit; One back plate, relative with this header board, and have a plurality of address electrodes; The one scan driver is arranged at first limit of this header board; One detects collection of letters circuit, is arranged at second limit of this header board; One detects lead, is located on this header board, and this detection lead has one first end and one second end, and this first end and this scanner driver couple, and this second end and this detection collection of letters circuit couple; An and control circuit, be coupled to this scanner driver and this detection collection of letters circuit, when this scanner driver is sent one scan drive signal and this detection collection of letters circuit and is not received this scanning drive signal, then this detection collection of letters circuit is sent a notification signal, this control circuit is added on this a plurality of bias voltages of keeping on electrode and a plurality of scan electrode outside interrupting after receiving this notification signal, to stop the discharging action of these a plurality of pixels.Wherein, when detection collection of letters circuit does not receive this detection signal, then send a notification signal, control circuit promptly interrupts the power supply of this plasma display after the reception notification signal, to stop the action of this plasma display.
In addition, plasma scope of the present invention also comprises: a back plate, and relative with header board, and have the multiaddress electrode; One dielectric layer covers and keeps on electrode and the scan electrode; And a diaphragm, cover on the dielectric layer.
The present invention also provides another kind of detection method, promptly do not detect lead in the header board manufacturing, and specific show electrode is extended, form the structure that a both-end is drawn, and testing circuit detects the signal condition of this lead in particular moment, to judge whether lead ruptures, if control circuit is then notified in fracture.The present invention is except that detecting the glass breakage, and whether the action waveforms that still can detect drive circuit is correct, therefore can reach the function that circuit is tested oneself.
The present invention also provides a kind of plasma scope, it is provided with a plurality of pixels, this plasma display comprises: a header board, it is provided with a plurality of electrode and a plurality of scan electrodes kept, be biased in when adding one that these are a plurality of when keeping between electrode and a plurality of scan electrode, can make these a plurality of pixels carry out discharging action, this header board also has one first limit and one second limit, and this first limit is relative with this second limit; One back plate, relative with this header board, and have a plurality of address electrodes; One detects collection of letters circuit, is arranged at first limit of this header board; One keeps driver, is arranged at second limit of this header board; One detects lead, is located on this header board, and this detection lead has one first end and one second end, and this first end and this are kept driver and coupled, and this second end and this detection collection of letters circuit couple; An and control circuit, be coupled to this and keep driver and this detection collection of letters circuit, keeping driver when this sends one and keeps drive signal and this detection collection of letters circuit and do not receive this when keeping drive signal, then this detection collection of letters circuit sends a notification signal, this control circuit is added on this a plurality of bias voltages of keeping on electrode and a plurality of scan electrode outside interrupting after receiving this notification signal, to stop the discharging action of these a plurality of pixels.Wherein, when detecting collection of letters circuit and do not receive scanning drive signal, then send a notification signal, after control circuit receives this notification signal, promptly interrupt the power supply of this plasma display or stop the action of this scanner driver to control circuit.
The present invention also provides a kind of plasma scope, it is provided with a plurality of pixels, this plasma display comprises: a header board, it is provided with a plurality of electrode and a plurality of scan electrodes kept, be biased in when adding one that these are a plurality of when keeping between electrode and a plurality of scan electrode, can make these a plurality of pixels carry out discharging action, this header board also has one first limit and one second limit, and this first limit is relative with this second limit; One back plate, relative with this header board, and have a plurality of address electrodes; One detects the circuit of delivering letters, and is arranged at first limit of this header board; One detects collection of letters circuit, is arranged at second limit of this header board; One detects lead, is located on this header board, and this detection lead has one first end and one second end, and this first end and this detection circuit of delivering letters couples, and this second end and this detection collection of letters circuit couple; An and control circuit, be coupled to this detection deliver letters circuit and this detection collection of letters circuit, when this detection is delivered letters circuit when sending a detection signal and this detection collection of letters circuit and not receiving this detection signal, then this detection collection of letters circuit sends a notification signal, this control circuit is added on this a plurality of bias voltages of keeping on electrode and a plurality of scan electrode outside interrupting after receiving this notification signal, to stop the discharging action of these a plurality of pixels.Wherein, do not receive this when keeping drive signal when detecting collection of letters circuit, then send a notification signal, this control circuit promptly interrupts the power supply of this plasma display or stops the action that this keeps driver after receiving this notification signal.
Description of drawings
Below in conjunction with accompanying drawing, describe embodiments of the invention in detail, wherein:
Fig. 1 is the side view cutaway drawing of unit (cell) structure in the prior art plasma display (PDP);
The calcspar of the plasma scope that Fig. 2 forms for plasma display shown in Figure 1;
Fig. 3 is for driving the schematic diagram that plasma display shows a picture frame in the prior art;
Fig. 4 is for keeping the sequential chart of control signal on electrode X and the scan electrode Y in single figure field in the prior art;
Fig. 5 is a plasma display block schematic diagram of first embodiment of the invention;
Fig. 6 is a plasma display block schematic diagram of second embodiment of the invention;
Fig. 7 is a collection of letters testing circuit calcspar of second embodiment of the invention;
Fig. 8 is the side view cutaway drawing of unit (cell) 10 in the first embodiment of the invention plasma display (PDP);
Fig. 9 is the side view cutaway drawing of unit (cell) structure in the second embodiment of the invention plasma display (PDP).
Embodiment
With reference to figure 5 and Fig. 8, Fig. 5 is the schematic diagram of a kind of plasma scope in the present embodiment; Fig. 8 is the generalized section of display unit 10 in the present embodiment plasma scope (PDP).
As shown in Figure 8, plasma scope is made up of header board (Front substrate) 1 ' and back plate (Rearsubstrate) 7 ' institute.On header board 1 ', comprise scan electrode parallel to each other (scanelectrodes) Y ' and keep electrode (sustain electrodes) X ', detection lead L1, dielectric layer 3 ' and diaphragm (protective film) 5 '.On the plate 7 ' of back, include the barrier rib 8 ' (partition wall) of address electrode (addresselectrodes) A ', address electrode both sides and the fluorescent material 9 ' between the barrier rib 8 '.This plasma display comprises a plurality of pixels 10, is biased in when keeping between electrode X ' and scan electrode Y ' when adding one, can make pixel 10 carry out discharging action, makes the plasma scope show image.
With reference to figure 5, on the header board 1 ' of plasma display 500, be furnished with and detect lead L1, L2, each detects lead L1, L2 and extends to the second relative limit 506 by first limit 505 of header board, and each detecting electrode L1, L2 two ends are coupled to detect and deliver letters circuit 520 and detect collection of letters circuit 522, examine and know and send notification signal BRK notice control circuit 510 powered-down PS when detecting lead L1, L2 fracture when detecting collection of letters circuit 522.Its operating principle is as follows:
At first, detect the circuit 520 of delivering letters by detecting lead L1, whether L2 sends signal specific S501, detect collection of letters circuit 522 detection signal S501 and exist.If detection signal S501 does not exist, represent that then panel may break, cause detecting lead L1, the L2 fracture at this moment, detects collection of letters circuit and promptly sends notification signal BRK notice control circuit 510.After control circuit 510 is notified, promptly interrupt being added on the bias voltage of keeping between electrode X ' and scan electrode Y ' outward, to stop the discharging action of pixel 10 by circuit 502.In addition, control circuit 510 also can stop to keep the action of driver 514 and scanner driver 512, and power ps is turned off, and makes plasma scope stop action fully.
With reference to figure 6, present embodiment provides another kind of plasma scope (PDP) glass breakage checkout gear, promptly utilizes present show electrode to make the function that timesharing detects, and so can additionally make the detection lead.
Fig. 9 is the generalized section of cellular construction in the present embodiment plasma scope (PDP).As shown in the figure, plasma scope is by header board (Front substrate) 1 " and back plate (Rearsubstrate) 7 " institute forms.At header board 1 " on comprise electrode (sustainelectrodes) X that keeps parallel to each other " and scan electrode (scan electrodes) Y ", dielectric layer 3 " and diaphragm (protective film) 5 ".At back plate 7 " on comprise address electrode (address electrodes) A " and fluorescent material 9 on it ".Each display unit around with barrier rib (partition wall) 8 " isolated.
With reference to figure 6, according to present embodiment, at first, what part was arranged on the plasma scope prebasal plate keeps electrode X " with scan electrode Y " be that first limit 605 by header board extends to the second relative limit 606, L as shown in the figure
61, L
62, L
63Electrode.This each extension electrode L
61, L
62, L
63Except electrode X is kept in conduct " or scan electrode Y ", also as detecting lead, so locate L
61, L
62, L
63Be also referred to as the mixed type electrode.Keep electrode X " and scan electrode Y " be coupled to respectively and keep driver 614 and scanner driver 612, and extension electrode L
61, L
62, L
63More be coupled to collection of letters testing circuit C61, C62, C63.Among this embodiment, can not be provided with and detect the circuit of delivering letters.Control circuit 610 can receive collection of letters testing circuit C61, C62, and the signal of C63, and have and stop to keep the action of driver 614 and scanner driver 612 and the ability that power ps is turned off.
The plasma scope that present embodiment provides has mixed type electrode L
61, L
62, L
63, there is no and detect the circuit of delivering letters.When system just often, all electrodes are according to the operation of normal PDP drive waveforms, as shown in Figure 4.
Detect collection of letters circuit C61, C62 and can in driving sequential, get specific 1 P with detecting electrode L
61, L
62Voltage whether as the voltage of predetermined waveform.If not, then infer panel ruptures and cause electrode L
61, L
62Broken string or to keep drive circuit 614 unusual at this moment, detects collection of letters circuit C61, C62 and promptly sends a notification signal I, and notice control circuit 610 stops the action of plasma scope.In like manner, detecting collection of letters circuit C63 can detecting electrode L
63Voltage whether normal.Receive the signalisation that detects collection of letters circuit C61, C62, C63 when control circuit 610, promptly interrupt being added to keeping electrode X " and scan electrode Y " between bias voltage, to stop the discharging action of pixel 20,30,40.In addition, control circuit 610 also can stop to keep the operation of driver 614 and scanner driver 612, and power ps is turned off, and makes plasma scope stop action fully.Fig. 7 is for detecting the structure calcspar of collection of letters circuit C61, C62, C63, and its operation is as described below.
This plasma display comprises a bleeder mechanism 71 and a comparator 72 in addition, as shown in Figure 7.At first, the voltage signal S of the mixed type electrode that received of arbitrary detection collection of letters circuit
REC, input to a comparator 72 and a reference input voltage V through bleeder mechanism 71
RefCompare.If voltage S
RECNot the voltage of predetermined waveform, then comparator 72 output signal FAIL turn off power ps for control circuit 610, keep electrode X and interrupt outer being added on " and scan electrode Y " between bias voltage, and the operation of keeping driver 614 or scanner driver 612 is stopped.But collection of letters testing circuit of the present invention is not limited to this structure, all have with the testing circuit of present embodiment identical function all applicable.
The plasma scope that present embodiment provided comprises a glass breakage checkout gear, and it has the following advantages: 1. be simple and easy to implement, applicable to the characteristic of plasm display panel.2. with the function of keeping and scanner driver detects automatically.
The distribution of mixed function electrode is not limited to above-described design in the second embodiment of the present invention, this electrode can have different group numbers, and the design of diverse location detects collection of letters circuit and also has different structures, as adopt numeral to simulation (A-D) method, sampling is held concurrently and is kept (sample ﹠amp; Hold) method etc.
Though disclosed the present invention in conjunction with above preferred embodiment; yet it is not in order to limit the present invention; any those skilled in the art can do and change and retouching without departing from the spirit and scope of the present invention, so protection scope of the present invention should be with appended being as the criterion that claim was defined.
Claims (11)
1. plasma scope, it is provided with a plurality of pixels, and this plasma display comprises:
One header board, it is provided with a plurality of electrode and a plurality of scan electrodes kept, and when this a plurality of keeping when adding a bias voltage between electrode and a plurality of scan electrode, can make these a plurality of pixels carry out discharging action, this header board also has one first limit and one second limit, and this first limit is relative with this second limit;
One back plate, relative with this header board, and have a plurality of address electrodes;
The one scan driver is arranged at first limit of this header board;
One detects collection of letters circuit, is arranged at second limit of this header board;
One detects lead, is located on this header board, and this detection lead has one first end and one second end, and this first end and this scanner driver couple, and this second end and this detection collection of letters circuit couple; And
One control circuit, be coupled to this scanner driver and this detection collection of letters circuit, when this scanner driver is sent one scan drive signal and this detection collection of letters circuit and is not received this scanning drive signal, then this detection collection of letters circuit is sent a notification signal, this control circuit is added on this a plurality of bias voltages of keeping on electrode and a plurality of scan electrode outside interrupting after receiving this notification signal, to stop the discharging action of these a plurality of pixels.
2. plasma scope as claimed in claim 1, it is characterized in that, this plasma display also comprises a power supply that is connected with this control circuit, after this control circuit receives this notification signal, the power supply of then turning off this plasma display is so that this plasma display stops action fully.
3. plasma scope as claimed in claim 1 is characterized in that, this control circuit stops the action of this scanner driver after receiving this notification signal.
4. plasma scope as claimed in claim 1 also comprises:
One dielectric layer covers keeping on electrode and this scan electrode on this header board; And
One diaphragm covers on this dielectric layer.
5. plasma scope, it is provided with a plurality of pixels, and this plasma display comprises:
One header board, it is provided with a plurality of electrode and a plurality of scan electrodes kept, and is biased in when adding one that these are a plurality of when keeping between electrode and a plurality of scan electrode, can make these a plurality of pixels carry out discharging action, this header board also has one first limit and one second limit, and this first limit is relative with this second limit;
One back plate, relative with this header board, and have a plurality of address electrodes;
One detects collection of letters circuit, is arranged at first limit of this header board;
One keeps driver, is arranged at second limit of this header board;
One detects lead, is located on this header board, and this detection lead has one first end and one second end, and this first end and this are kept driver and coupled, and this second end and this detection collection of letters circuit couple; And
One control circuit, be coupled to this and keep driver and this detection collection of letters circuit, keeping driver when this sends one and keeps drive signal and this detection collection of letters circuit end and receive this when keeping drive signal, then this detection collection of letters circuit sends a notification signal, this control circuit is added on this a plurality of bias voltages of keeping on electrode and a plurality of scan electrode outside interrupting after receiving this notification signal, to stop the discharging action of these a plurality of pixels.
6. plasma scope as claimed in claim 5, it is characterized in that, this plasma display also comprises a power supply that is connected with this control circuit, after this control circuit receives this notification signal, then interrupt the power supply of this plasma display, so that this plasma display stops action fully.
7. plasma scope as claimed in claim 5 is characterized in that, this control circuit then stops the action that this keeps driver after receiving this notification signal.
8. plasma scope as claimed in claim 5 also comprises:
One dielectric layer covers on this header board this and keeps on electrode and this scan electrode; And
One diaphragm covers on this dielectric layer.
9. plasma scope, it is provided with a plurality of pixels, and this plasma display comprises:
One header board, it is provided with a plurality of electrode and a plurality of scan electrodes kept, and is biased in when adding one that these are a plurality of when keeping between electrode and a plurality of scan electrode, can make these a plurality of pixels carry out discharging action, this header board also has one first limit and one second limit, and this first limit is relative with this second limit;
One back plate, relative with this header board, and have a plurality of address electrodes;
One detects the circuit of delivering letters, and is arranged at first limit of this header board;
One detects collection of letters circuit, is arranged at second limit of this header board;
One detects lead, is located on this header board, and this detection lead has one first end and one second end, and this first end and this detection circuit of delivering letters couples, and this second end and this detection collection of letters circuit couple; And
One control circuit, be coupled to this detection deliver letters circuit and this detection collection of letters circuit, when this detection is delivered letters circuit when sending a detection signal and this detection collection of letters circuit and not receiving this detection signal, then this detection collection of letters circuit sends a notification signal, this control circuit is added on this a plurality of bias voltages of keeping on electrode and a plurality of scan electrode outside interrupting after receiving this notification signal, to stop the discharging action of these a plurality of pixels.
10. plasma scope as claimed in claim 9, it is characterized in that, this plasma display also comprises a power supply that is connected with this control circuit, after this control circuit receives this notification signal, then interrupt the power supply of this plasma display, so that this plasma display stops action fully.
11. plasma scope as claimed in claim 9 also comprises:
One dielectric layer covers on this header board this and keeps on electrode and this scan electrode; And
One diaphragm covers on this dielectric layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011013702A CN1204588C (en) | 2001-01-03 | 2001-01-03 | Plasma dispaly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011013702A CN1204588C (en) | 2001-01-03 | 2001-01-03 | Plasma dispaly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1363946A CN1363946A (en) | 2002-08-14 |
| CN1204588C true CN1204588C (en) | 2005-06-01 |
Family
ID=4652035
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011013702A Expired - Fee Related CN1204588C (en) | 2001-01-03 | 2001-01-03 | Plasma dispaly |
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| Country | Link |
|---|---|
| CN (1) | CN1204588C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7355434B2 (en) * | 2003-10-01 | 2008-04-08 | Matsushita Electric Industrial Co., Ltd. | Lighting inspection device for plasma display panel and display panel producing method |
| JP4276157B2 (en) * | 2003-10-09 | 2009-06-10 | 三星エスディアイ株式会社 | Plasma display panel and driving method thereof |
| CN108322729A (en) * | 2018-02-27 | 2018-07-24 | 广东欧珀移动通信有限公司 | Control method, control device and the electronic device of laser projection module |
| CN108388063B (en) * | 2018-02-27 | 2022-03-22 | Oppo广东移动通信有限公司 | Laser projection module, depth camera and electronic device |
| CN108388064A (en) * | 2018-02-27 | 2018-08-10 | 广东欧珀移动通信有限公司 | The laser projection module and its detection method of rupture, depth camera and electronic device |
| CN108333850A (en) * | 2018-02-27 | 2018-07-27 | 广东欧珀移动通信有限公司 | The laser projection module and its detection method of damage, depth camera and electronic device |
| EP3561590A4 (en) | 2018-02-27 | 2020-04-15 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Laser projection module and detection method for its cracking, depth camera and electronic device |
| CN108375864A (en) * | 2018-02-27 | 2018-08-07 | 广东欧珀移动通信有限公司 | The laser projection module and its detection method of rupture, depth camera and electronic device |
| CN108594563A (en) * | 2018-04-03 | 2018-09-28 | Oppo广东移动通信有限公司 | Project structured light module, image capturing device and electronic equipment |
| CN108196418A (en) * | 2018-02-27 | 2018-06-22 | 广东欧珀移动通信有限公司 | Laser projection module, depth camera and electronic device |
| CN108594562A (en) * | 2018-04-02 | 2018-09-28 | 浙江舜宇光学有限公司 | Project module and projecting method |
-
2001
- 2001-01-03 CN CNB011013702A patent/CN1204588C/en not_active Expired - Fee Related
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| CN1363946A (en) | 2002-08-14 |
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