CN105845843A - Organic light emitting display panel and detection and compensation method thereof - Google Patents

Abstract

The invention provides an organic light-emitting display panel and a detection and compensation method thereof. First, an organic light-emitting display panel is provided, and the organic light-emitting display panel is subjected to a detection step to detect abnormally bright areas. Mark the location of the abnormally bright area of the organic light-emitting display panel. Calculate the brightness value of the abnormally bright area, and convert the brightness value of the abnormally bright area into a compensation thickness value. Next, a compensation process of the organic light-emitting display panel is performed to perform a thickness compensation step on the corresponding abnormally bright area of the organic light-emitting display panel.

Description

Organic light-emitting display panel and its detection and compensation method

technical field

The present invention relates to an organic light-emitting display panel and its detection and compensation method, and in particular to a detection and compensation method of the organic light-emitting display panel with a thickness compensation step.

Background technique

With the advancement of technology, flat panel display is the most attention-grabbing display technology in recent years. Among them, the organic light emitting display panel (Organic Light Emitting Display, OLED) has great advantages due to its self-illumination, no viewing angle dependence, power saving, simple process, low cost, low temperature operating range, high response speed and full color. Its application potential is expected to become the mainstream of the next generation of flat panel displays.

The OLED inkjet printing technology (Ink Jet Printing, IJP) can improve the utilization rate of materials in the process of OLED to reduce the process cost. Specifically, the film layers in the OLED can be formed by inkjet coating technology. In order to distinguish the region of each pixel electrode in the OLED, it is necessary to form a plurality of barrier structures (Bank) corresponding to the pixel structure before inkjet coating. Generally speaking, the retaining wall structure is formed by lithographic etching and other processes by using a fluorine-containing negative photoresist. However, during the exposure process, there will be unevenness in the energy and the mirror group at the junction of the light source mirror group, resulting in the phenomenon of uneven exposure (Lens mura). Therefore, an undercut phenomenon on the etching may be caused. In other words, the resulting retaining wall structure will have beveled edges, affecting the difference in brightness after spotting.

Displays currently on the market use IC chips to adjust the driving current to compensate for the phenomenon of uneven exposure brightness. However, such a method needs extra time to collect image information and correct it, and additionally design and use a compensation circuit. For lighting products, the compensation method using IC will add a huge amount of cost.

Contents of the invention

The invention provides a method for detecting and compensating an organic light-emitting display panel, which can effectively compensate uneven brightness under the premise of reducing costs.

The invention provides a detection and compensation method of an organic light-emitting display panel, which includes providing an organic light-emitting display panel and performing a detection step on the organic light-emitting display panel to detect an abnormally bright area. Mark the location of the abnormally bright area of the organic light emitting display panel. Calculate the brightness value of the abnormally bright area, and convert the brightness value of the abnormally bright area into a compensation thickness value. A compensation process of the organic light emitting display panel is performed to perform a thickness compensation step on the corresponding abnormal bright area of the organic light emitting display panel.

Wherein, performing the thickness compensation includes: using an inkjet process to form a compensation thickness to change the thickness of the abnormally bright area of the organic light emitting display panel.

Among them, the manufacturing process of the organic light-emitting display panel includes:

forming a first electrode layer;

forming a hole injection layer on the first electrode layer;

forming a hole transport layer on the hole injection layer;

forming a light emitting layer on the hole transport layer;

forming an electron transport layer on the light-emitting layer;

forming an electron injection layer on the electron transport layer; and

A second electrode layer is formed on the electron injection layer. The hole injection layer, the hole transport layer, the electron transport layer, the electron injection layer and the light emitting layer are formed by using an inkjet process.

Wherein, the step of performing the thickness compensation on the abnormally bright region of the organic light emitting display panel includes forming the hole injection layer, the hole transport layer, the electron transport layer, the electron injection layer of the organic light emitting display panel Or at the same time as the light-emitting layer, the ink-jet process is used to perform the thickness compensation step corresponding to the abnormally bright area.

Among them, the manufacturing process of the organic light-emitting display panel includes:

forming a first electrode layer;

forming a hole injection layer on the first electrode layer;

forming a hole transport layer on the hole injection layer;

forming a light emitting layer on the hole transport layer;

forming an electron transport layer on the light-emitting layer;

forming an electron injection layer on the electron transport layer; and

forming a second electrode layer on the electron injection layer, wherein the hole injection layer, the hole transport layer, the electron transport layer, the electron injection layer, the light emitting layer and the first electrode layer are deposited using an evaporation process to form.

Wherein, the step of performing the thickness compensation on the abnormally bright region of the organic light emitting display panel includes forming the hole injection layer, the hole transport layer, the electron transport layer, the electron injection layer of the organic light emitting display panel , the light-emitting layer or the first electrode layer, the evaporation process is used to perform the thickness compensation step corresponding to the abnormally bright region.

Wherein, before forming the hole injection layer, it further includes forming a wall structure to define a plurality of unit regions, and the hole injection layer, the hole transport layer and the light emitting layer are formed on the wall structure within the defined unit area.

Wherein, the step of performing the thickness compensation on the abnormally bright area of the organic light emitting display panel further includes:

performing the detection step on the organic light emitting display panel;

If the abnormally bright area of the organic light emitting display panel still exists, calculate the brightness value of the abnormally bright area of the organic light emitting display panel and convert it into another compensation thickness value; and

A compensation procedure for the further organic light emitting display panel is performed to perform another thickness compensation step for the abnormally bright region of the further organic light emitting display panel.

The invention provides an organic light emitting display panel, which has a plurality of unit areas on a substrate. The multiple cell areas include compensated areas and uncompensated areas. The compensation area has a compensation light emitting element layer, and the compensation light emitting element layer includes a first electrode layer, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, a second electrode layer and a compensation thickness. The first electrode layer is disposed on the substrate. The hole injection layer is disposed on the first electrode layer. The hole transport layer is disposed on the hole injection layer. The light emitting layer is disposed on the hole transport layer. The electron transport layer is disposed on the light emitting layer. The electron injection layer is disposed on the electron transport layer. The second electrode layer is disposed on the electron injection layer. The compensation thickness can be optionally disposed on the hole injection layer, the hole transport layer, the electron transport layer, the electron injection layer, the light emitting layer or the first electrode layer. The uncompensated area has a light emitting element layer, and the light emitting element layer includes a first electrode layer, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer and a second electrode layer. The first electrode layer is disposed on the substrate. The hole injection layer is disposed on the first electrode layer. The hole transport layer is disposed on the hole injection layer. The light emitting layer is disposed on the hole transport layer. The electron transport layer is disposed on the light emitting layer. The electron injection layer is disposed on the electron transport layer. The second electrode layer is disposed on the electron injection layer, and the thickness of the compensation light-emitting element layer is greater than that of the light-emitting element layer.

Wherein, the compensated area and the uncompensated area are used to emit the same color light.

Based on the above, the present invention detects the brightness value of the abnormally bright area of the organic light-emitting display panel in advance, and converts it into a compensation thickness value to modify the thickness of the film layer in the organic light-emitting display panel manufactured subsequently, which can effectively compensate for the abnormal brightness. Uniform phenomenon, so as to improve the uniformity of light emission of the entire panel.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail together with the accompanying drawings.

Description of drawings

FIG. 1 is a flowchart of a detection and compensation method for an organic light emitting display panel of the present invention.

FIG. 2 is a schematic cross-sectional view of an organic light emitting display panel of the present invention.

FIG. 3 is an equivalent circuit diagram of the active element layer and the light emitting element layer in the organic light emitting display panel of the present invention.

FIG. 4A is an enlarged schematic view of a region R0 of the organic light emitting display panel of FIG. 2 .

FIG. 4B is an enlarged schematic view of the compensated region R1 of the organic light emitting display panel according to an embodiment of the present invention.

FIG. 5 is an enlarged schematic diagram of a region R2 of an organic light emitting display panel after compensation according to another embodiment of the present invention.

FIG. 6 is an enlarged schematic view of the compensated region R3 of the organic light emitting display panel according to yet another embodiment of the present invention.

FIG. 7 is an enlarged schematic diagram of a region R4 of an organic light emitting display panel after compensation according to another embodiment of the present invention.

FIG. 8 is an enlarged schematic view of a region R5 of an organic light emitting display panel after compensation according to another embodiment of the present invention.

FIG. 9 is an enlarged schematic view of the compensated region R6 of the organic light emitting display panel according to yet another embodiment of the present invention.

FIG. 10 is a schematic top view of a compensated organic light emitting display panel according to yet another embodiment of the present invention.

FIG. 11 is a schematic cross-sectional view of the organic light-emitting display panel of FIG. 10 along line A-A'.

Among them, reference signs:

S1～S5: steps

10: Organic light-emitting display panel

100: Substrate

110: Active component layer

120: first electrode layer

130, 130a: hole injection layer

140, 140a: hole transport layer

150, 150a: light-emitting layer

160, 160a: electron transport layer

170, 170a: electron injection layer

180: second electrode

200: protective layer

300: retaining wall structure

O: light emitting element layer

X: compensation light emitting element layer

U: unit area

P: pixel structure

R0, R1, R2, R3, R4, R5: Regions

R0: compensation area

R1: Uncompensated region

SL: scan line

DL: data line

T1, T2: active components

CS: Capacitor

VDD: Voltage

VSS: Voltage

h: compensation thickness

H1, H2: Thickness

detailed description

FIG. 1 is a flowchart of a detection and compensation method for an organic light emitting display panel of the present invention. FIG. 2 is a schematic cross-sectional view of the organic light emitting display panel 10 of the present invention. Referring to FIG. 1 , in step S1 , an organic light emitting display panel 10 is provided. Referring to FIG. 2, the organic light emitting display panel 10 includes a substrate 100, an active element layer 110, a first electrode layer 120, a hole injection layer 130, a hole transport layer 140, a light emitting layer 150, an electron transport layer 160, and an electron injection layer 170. , the second electrode 180 , the protective layer 200 and the retaining wall structure 300 . Wherein, the first electrode layer 120 , the hole injection layer 130 , the hole transport layer 140 , the light emitting layer 150 , the electron transport layer 160 , the electron injection layer 170 and the second electrode 180 constitute the light emitting element layer O. The manufacturing process of the organic light emitting display panel 10 will be explained in detail below.

FIG. 3 is an equivalent circuit diagram of the active device layer 110 and the light emitting device layer O in the organic light emitting display panel 10 of the present invention. Referring to FIG. 2 and FIG. 3 at the same time, the active device layer 110 is firstly formed on the substrate 100 . The substrate 100 is mainly used to carry components of the organic light emitting display device. The material of the substrate 100 can be glass, quartz, organic polymer, plastic, flexible plastic or opaque/reflective material, etc., and the present invention is not limited thereto. In this embodiment, in order to allow the light generated by the light-emitting element layer O to transmit through the substrate 100 , the substrate 100 is preferably a transparent substrate, such as a transparent glass substrate or a transparent flexible substrate. The active device layer 110 has a plurality of pixel structures P, and each pixel structure P includes at least one active device T1, T2. According to an embodiment of the present invention, the active device layer 110 further includes a plurality of scan lines SL, a plurality of data lines DL, and a plurality of power lines (not shown) connected to the voltage VDD. Wherein, each pixel structure P is electrically connected to a corresponding scan line SL, a corresponding data line DL, and a corresponding power line (not shown). In this embodiment, each pixel structure P includes a first active device T1 , a second active device T2 and a capacitor CS. It is worth noting that in this embodiment, each pixel structure P is illustrated by using two active elements and a capacitor (2T1C) as an example, but this is not intended to limit the present invention, and the present invention is not limited to each pixel structure P The number of active components and capacitors inside.

In the 2T1C pixel structure, the active element T1 has a gate, a source, a drain, and a channel region (not shown), and the source of the active element T1 is electrically connected to the data line DL, and the gate is connected to the scan line SL. electrically connected, and the drain is electrically connected to the active device T2. Similarly, the active device T2 also has a gate, a source, a drain and a channel region (not shown), and the gate of the active device T2 is electrically connected to the drain of the active device T1, and the source of the active device T2 It is electrically connected with a power line (not shown). One terminal of the capacitor CS is electrically connected to the drain of the active device T1 , and the other terminal of the capacitor CS is electrically connected to the source of the active device T2 and a power line (not shown). On the other hand, at least one active device T1, T2 is electrically connected to the light emitting device layer O, as shown in FIG. 3 .

Referring to FIG. 2 again, a plurality of wall structures 300 are formed on the active device layer 110 to define a plurality of corresponding pixel structures P disposed in the unit area U between each wall structure 300 . The retaining wall structure 300 is, for example, made of fluorine-containing negative-type photoresist and is formed through processes such as lithography etching, but the invention is not limited thereto. Other known materials or forming methods of the retaining wall structure can also be used in the present invention.

Next, the first electrode layer 120 is formed in the unit area U defined by the wall structure 300 . The material of the first electrode layer 120 can be a transparent conductive material or an opaque conductive material, and the first electrode layer 120 can be a single-layer structure or a multi-layer structure. The transparent conductive material includes a metal oxide, such as indium tin oxide, indium zinc oxide, aluminum tin oxide, aluminum zinc oxide, indium germanium zinc oxide, or other suitable oxides (such as zinc oxide), or is a stack layer of at least two of the above. The opaque conductive material includes metals such as silver, aluminum, molybdenum, copper or titanium, or other suitable metals. Based on the above, the first electrode layer 120 is electrically connected to the active device layer 110 . In other words, the first active device T1 or the second active device T2 in the active device layer 110 is electrically connected to the light emitting device layer O through the first electrode layer 120 . In this embodiment, the first electrode layer 120 is used as the cathode of the light emitting element layer O, but the present invention is not limited thereto. In other embodiments, the first electrode layer 120 may also be the anode of the light emitting element layer O. As shown in FIG.

After forming the first electrode layer 120 , it further includes sequentially forming a hole injection layer 130 , a hole transport layer 140 and a light emitting layer 150 on the first electrode layer 120 . Similar to the first electrode layer 120 , the hole injection layer 130 , the hole transport layer 140 and the light emitting layer 150 are also formed in the unit area U defined by the barrier structure 300 . The material of the hole injection layer 130 is, for example, blue copper xylylene, star aromatic amines, polyaniline, polyethylene dioxythiophene, or other suitable materials. On the other hand, the material of the hole transport layer 140 is, for example, triarylamines, cross-structure diamine biphenyl, diamine biphenyl derivatives or other suitable materials. The light-emitting layer 150 can be a red organic light-emitting pattern, a green organic light-emitting pattern, a blue organic light-emitting pattern, or a light-emitting pattern of different colors (such as white, orange, purple, etc.) generated by mixing light of each spectrum. Based on the above, in this embodiment, the hole injection layer 130 , the hole transport layer 140 and the light emitting layer 150 are all formed by inkjet process. However, the present invention is not limited thereto. In other embodiments, the hole injection layer 130 , the hole transport layer 140 and the light emitting layer 150 can also be formed by evaporation.

Next, an electron transport layer 160 and an electron injection layer 170 are sequentially formed on the light emitting layer 150 . The material of the electron transport layer 160 is, for example, oxazole derivatives and their dendrimers, metal chelates, azole compounds, diazanthracene derivatives, silicon-containing heterocyclic compounds, or other suitable materials. The material of the electron injection layer 170 is, for example, lithium oxide, lithium boron oxide, potassium silicon oxide, cesium carbonate, sodium acetate, lithium fluoride base or other suitable materials. In this embodiment, since the electron transport layer 160 and the electron injection layer 170 are formed by evaporation, they do not need to be disposed in the unit area U defined by the retaining wall structure 300 . In other words, the electron transport layer 160 and the electron injection layer 170 can be directly formed on the barrier structure 300 , as shown in FIG. 2 . However, the present invention is not limited thereto. In other embodiments, the electron transport layer 160 and the electron injection layer 170 can also be formed by evaporation.

After forming the electron injection layer 170 , further comprising forming a second electrode layer 180 on the electron injection layer 170 . Similar to the first electrode layer 120, the second electrode layer 180 may also have a single-layer structure or a multi-layer structure. Besides, the material of the second electrode layer 180 may be selected from the materials of the aforementioned first electrode layer 120 . In other words, the material of the second electrode layer 180 may be the same as or different from that of the first electrode layer 120 . It should be noted that, in this embodiment, the second electrode layer 180 is connected to the voltage VSS, and the voltage VSS is a ground potential. In other words, as shown in FIG. 3 , the light emitting element layer O is connected to the voltage VSS through the second electrode layer 180 . In this embodiment, the second electrode layer 180 serves as the anode of the light emitting element layer O, but the present invention is not limited thereto. In other embodiments, the second electrode layer 180 can also be the cathode of the light emitting element layer O. As shown in FIG.

After the second electrode layer 180 is completed, the organic light emitting display panel 10 of this embodiment is substantially completed. However, the organic light emitting display panel 10 of this embodiment may further include a protective layer 200 . The function of the protective layer 200 is to protect the light emitting element layer O, so its material can be organic material or inorganic material. Specifically, the protection layer 200 is, for example, a cover plate or other packaging components, and the invention is not limited thereto.

Referring to FIG. 1 again, in step S2, a detection step is performed to detect whether the organic light emitting display panel 10 has an abnormally bright area. If the organic light emitting display panel 10 does not have abnormally bright areas, the organic light emitting display panel 10 can be determined as a finished organic light emitting display panel. If an abnormal bright area is detected in the organic light emitting display panel 10 , step S3 is performed to mark the position of the abnormal bright area. For example, referring to FIG. 2 , if the region R0 is detected to have abnormally bright areas, the region R0 is marked.

After the region R0 is marked, step S4 is performed to calculate the brightness value of the abnormally bright region and convert it into a compensation thickness value. That is to say, the abnormal brightness value of the region R0 is compared with other non-abnormal regions, and a thickness value is calculated in a backward manner to compensate the brightness value of the region R0.

After the compensation thickness value is calculated, a compensation procedure of the organic light emitting display panel is performed to perform thickness compensation on the corresponding abnormally bright area of the organic light emitting display panel, as shown in step S5. The specific flow of step S5 will be described in detail below.

FIG. 4A is an enlarged schematic view of a region R0 of the organic light emitting display panel 10 of FIG. 2 . FIG. 4B is an enlarged schematic view of the compensated region R1 of the organic light emitting display panel according to an embodiment of the present invention. Please refer to FIG. 4A and FIG. 4B at the same time. In this embodiment, the detection and compensation process of the organic light emitting display panel is similar to the detection and compensation process of the organic light emitting display panel 10 , so the same components are denoted by the same symbols and will not be described again. The difference between the two lies in that in the detection and compensation process of the organic light-emitting display panel, since the thickness value to be compensated for the abnormally bright area has been obtained in advance, in the step of forming the hole injection layer 130a, inkjet can be used to The thickness of the hole injection layer 130a in the abnormally bright region is changed by a process or an evaporation process to form the compensation light-emitting element layer X. Specifically, the hole injection layer 130a in the region R1 of the organic light emitting display panel has a compensation thickness h, so its thickness is thicker than that of the hole injection layer 130 in the region R0 of the organic light emitting display panel 10, as shown in FIG. 4A And as shown in Figure 4B.

In this embodiment, by first detecting the brightness value of the abnormally bright area of the organic light emitting display panel and converting it into a compensation thickness value to modify the thickness of the film layer in the organic light emitting display panel manufactured subsequently, the brightness can be effectively compensated Non-uniform phenomenon, so as to improve the uniformity of light emission of the entire panel.

FIG. 5 is an enlarged schematic diagram of a region R2 of an organic light emitting display panel after compensation according to another embodiment of the present invention. The embodiment of Fig. 5 is similar to the embodiment of Figs. 4A-4B, therefore, the same elements are denoted by the same symbols and will not be described again. The difference between the two embodiments of FIG. 5 and FIGS. 4A-4B is that in this embodiment, the thickness of the hole transport layer 140a in the abnormally bright region is changed by using an inkjet process or an evaporation process to form a compensation light-emitting element layer X . In other words, the hole transport layer 140a in the region R2 of the organic light emitting display panel has a compensation thickness h, so its thickness is thicker than that of the hole transport layer 140a in the region R0 of the organic light emitting display panel 10, as shown in FIG. 4A and FIG. 5.

FIG. 6 is an enlarged schematic view of a region R3 of an organic light emitting display panel after compensation according to another embodiment of the present invention. The embodiment of Fig. 6 is similar to the embodiment of Figs. 4A-4B, so the same elements are denoted by the same symbols and will not be described again. The difference between FIG. 6 and FIG. 4A-4B is that in this embodiment, the thickness of the light emitting layer 150a in the abnormally bright region is changed by inkjet process or vapor deposition process to form the compensation light emitting element layer X. In other words, the light emitting layer 150 a in the region R3 of the organic light emitting display panel has a compensation thickness h, so its thickness is thicker than that of the light emitting layer 150 in the region R0 of the organic light emitting display panel 10 , as shown in FIG. 4A and FIG. 6 . For example, the thickness of the light-emitting layer 150 of the same color is about About 10% (± 5%) of the thickness change is a process error, and the thickness value is about If the thickness variation of the light-emitting layer 150 of the same color is greater than 10% (±5%), for example, the thickness value is less than about or greater than Just for the difference caused by compensating the thickness value. However, the above-mentioned thickness variation may vary depending on different materials, so it is not limited thereto.

FIG. 7 is an enlarged schematic diagram of a region R4 of an organic light emitting display panel after compensation according to another embodiment of the present invention. The embodiment of Fig. 7 is similar to the embodiment of Figs. 4A-4B, so the same elements are denoted by the same symbols and will not be described again. The difference between FIG. 7 and the two embodiments in FIGS. 4A-4B is that in this embodiment, the thickness of the electron transport layer 160a in the abnormally bright region is changed by inkjet process or vapor deposition process to form the compensation light emitting element layer X. In other words, the electron transport layer 160a in the region R4 of the organic light emitting display panel has a compensation thickness h, so its thickness is thicker than that of the electron transport layer 160 in the region R0 of the organic light emitting display panel 10, as shown in FIG. 4A and FIG. 7 Show.

FIG. 8 is an enlarged schematic view of a region R5 of an organic light emitting display panel after compensation according to another embodiment of the present invention. The embodiment of Fig. 8 is similar to the embodiment of Figs. 4A-4B, so the same elements are denoted by the same symbols and will not be described again. The difference between FIG. 8 and the two embodiments in FIGS. 4A-4B is that in this embodiment, the thickness of the electron injection layer 170a in the abnormally bright region is changed by inkjet process or vapor deposition process to form the compensation light emitting element layer X. In other words, the electron injection layer 170a in the region R5 of the organic light emitting display panel has a compensation thickness h, so its thickness is thicker than that of the electron injection layer 170 in the region R0 of the organic light emitting display panel 10, as shown in FIG. 4A and FIG. 8 Show.

FIG. 9 is an enlarged schematic view of the compensated region R6 of the organic light emitting display panel according to yet another embodiment of the present invention. The embodiment of Fig. 8 is similar to the embodiment of Figs. 4A-4B, so the same elements are denoted by the same symbols and will not be described again. The difference between FIG. 9 and the two embodiments in FIGS. 4A-4B is that in this embodiment, the thickness of the first electrode layer 120a in the abnormally bright region is changed by evaporation process to form the compensation light emitting element layer X. In other words, the first electrode layer 120a in the region R6 of the organic light emitting display panel has a compensation thickness h, so its thickness is thicker than that of the electron injection layer 170 in the region R0 of the organic light emitting display panel 10, as shown in FIG. 4A and FIG. 9 shown.

In the embodiments shown in FIG. 5 to FIG. 9, the luminance value of the abnormally bright area of the organic light emitting display panel is detected in advance and converted into a compensation thickness value to modify the film layer in the subsequently manufactured organic light emitting display panel. The thickness can effectively compensate the Lens mura phenomenon, so that the uniformity of the entire panel can be improved. However, the present invention is applicable to repairing display panels with abnormally bright regions (mura), not limited to Lens mura.

Please refer to FIG. 1 again, after executing step S5 and performing the thickness compensation step on the corresponding abnormally bright areas of the OLED panel, step S2 is executed again to determine whether the OLED panel still has abnormally bright areas. If the organic light emitting display panel does not have abnormally bright areas, the organic light emitting display panel can be determined as a finished organic light emitting display panel. If an abnormally bright area is detected on the organic light emitting display panel, steps S3-S5 are performed again. In other words, the luminance value of the abnormally bright area of the OLED display panel is calculated again and converted into another compensation thickness value, and the compensation procedure of the OLED display surface is performed again, so as to perform another compensation for the corresponding abnormally bright area of the OLED display panel. Thickness compensation step. It is worth noting that steps S2 to S5 are repeated until the subsequent organic light emitting display panel does not detect abnormally bright areas in step S2 and is determined to be a finished organic light emitting display panel.

When an organic light emitting display panel is judged as a finished organic light emitting display panel, subsequent organic light emitting display panels can be batch manufactured according to the manufacturing parameters of the finished organic light emitting display panel, and another organic light emitting display panel can be found after batch manufacturing. Panel sampling to ensure quality is sufficient. In other words, after the parameters of the finished product are obtained, it is only necessary to sample samples from subsequent batches of manufacturing for testing, without requiring each organic light emitting display panel to go through the above-mentioned testing and compensation steps, so as to save costs. If the sampled organic light-emitting display panels do not have abnormally bright areas, the next batch of organic light-emitting display panels will be manufactured using the previous process parameters. On the other hand, if the sampled organic light emitting display panel has an abnormally bright area, the steps S1 to S5 are repeated until the subsequent organic light emitting display panel can be determined as a finished organic light emitting display panel.

Please refer to Figure 10 and Figure 11. FIG. 10 is a schematic top view of a compensated organic light emitting display panel 10 according to yet another embodiment of the present invention. FIG. 11 is a schematic cross-sectional view of the organic light-emitting display panel A-A' in FIG. 10 . The organic light emitting display panel 10 has a substrate 100 and a protective layer 200 disposed on a side opposite to the substrate 100 . There are a plurality of unit regions U on the substrate 10 for emitting different colors respectively. For example, the unit area U includes a unit area U that emits red light (R), a unit area U that emits green light (G), and a unit area U that emits blue light (B). In this embodiment, the unit region U that emits red light (R) has a compensation region R0. If the unit region U that emits red light (R) adjacent to the compensation region R0 is not subjected to the compensation step, then the overall thickness H1 of the compensated light-emitting element layer X in the compensation region R0 in the AA' section of the organic light-emitting display panel 10 is compared to that without The overall thickness H2 of the light-emitting element layer O in the compensation region R1 is thicker, that is, the overall thickness H1 of the compensation light-emitting element layer X>the overall thickness H2 of the light-emitting element layer O.

To sum up, the present invention can effectively compensate by detecting the luminance value of the abnormally bright area of the organic light emitting display panel in advance and converting it into a compensation thickness value to modify the thickness of the film layer in the subsequently manufactured organic light emitting display panel. The phenomenon of uneven brightness, so as to improve the uniformity of light emission of the entire panel. The compensation step will cause the organic light-emitting display panel to have different thickness values for the light-emitting elements emitting the same color in the abnormal bright area and the normal bright area.

Certainly, the present invention also can have other various embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes All changes and modifications should belong to the protection scope of the claims of the present invention.

Claims (10)

1. the detection of an organic electroluminescence display panel and compensation method, it is characterised in that including:

Carry out a detection program, including detecting whether an organic electroluminescence display panel has an abnormal clear zone；

When detecting that this organic electroluminescence display panel has this exception clear zone, this exception clear zone of labelling is in this organic light emitting display Position on panel, and it is ready for a compensation program, or do not detect that this organic electroluminescence display panel has this exception clear zone Time, do not carry out this compensation program；Wherein

This compensation program includes: calculate the brightness value in this exception clear zone, and the brightness value in this exception clear zone is converted into a compensation One-tenth-value thickness 1/10；

According to this compensation one-tenth-value thickness 1/10, this exception clear zone of this organic electroluminescence display panel is carried out a thickness compensation；And

Re-start this detection program.

The detection of organic electroluminescence display panel the most according to claim 1 and compensation method, it is characterised in that carry out this Thickness compensation includes: utilizes an ink-jetting process to form a compensation thickness and changes this exception clear zone of this organic electroluminescence display panel Thickness.

The detection of organic electroluminescence display panel the most according to claim 1 and compensation method, it is characterised in that this is organic The manufacturing process of light emitting display panel includes:

Form one first electrode layer；

A hole injection layer is formed on this first electrode layer；

A hole transmission layer is formed on this hole injection layer；

A luminescent layer is formed on this hole transmission layer；

An electron transfer layer is formed on this luminescent layer；

An electron injecting layer is formed on this electron transfer layer；And

On this electron injecting layer, form a second electrode lay, this hole injection layer, this hole transmission layer, this electron transfer layer, This electron injecting layer and this luminescent layer are to use an ink-jetting process to be formed.

The detection of organic electroluminescence display panel the most according to claim 3 and compensation method, it is characterised in that to described This exception clear zone of organic electroluminescence display panel carries out this thickness compensation step and is included in the described organic electroluminescence display panel of formation This hole injection layer, this hole transmission layer, this electron transfer layer, this electron injecting layer or this luminescent layer while, utilize This ink-jetting process is in carrying out this thickness compensation step in abnormal clear zone.

The detection of organic electroluminescence display panel the most according to claim 1 and compensation method, it is characterised in that this is organic The manufacturing process of light emitting display panel includes:

Form one first electrode layer；

A hole injection layer is formed on this first electrode layer；

A hole transmission layer is formed on this hole injection layer；

A luminescent layer is formed on this hole transmission layer；

An electron transfer layer is formed on this luminescent layer；

An electron injecting layer is formed on this electron transfer layer；And

A second electrode lay, wherein this hole injection layer, this hole transmission layer, this electric transmission is formed on this electron injecting layer Layer, this electron injecting layer, this luminescent layer and this first electrode layer are to use an evaporation process to be formed.

The detection of organic electroluminescence display panel the most according to claim 5 and compensation method, it is characterised in that to described This exception clear zone of organic electroluminescence display panel carries out this thickness compensation step and is included in the described organic electroluminescence display panel of formation This hole injection layer, this hole transmission layer, this electron transfer layer, this electron injecting layer, this luminescent layer or this first electrode layer While, utilize this evaporation process in carrying out this thickness compensation step in abnormal clear zone.

7. according to detection and the compensation method of the organic electroluminescence display panel described in claim 3 or 5, it is characterised in that Before forming this hole injection layer, further including formation one barrier wall structure, to define multiple unit area, and this hole is injected Layer, this hole transmission layer and this luminescent layer are formed in unit area defined in this barrier wall structure.

The detection of organic electroluminescence display panel the most according to claim 1 and compensation method, it is characterised in that to described Organic electroluminescence display panel to should carrying out this thickness compensation step and further include in abnormal clear zone:

Described organic electroluminescence display panel is carried out this detecting step；

If this exception clear zone of described organic electroluminescence display panel still exists, calculate being somebody's turn to do of described organic electroluminescence display panel The brightness value in abnormal clear zone and be converted into another and compensate one-tenth-value thickness 1/10；And

Carry out again the compensation program of organic electroluminescence display panel, with to described organic electroluminescence display panel again to should be the brightest District carries out another thickness compensation step.

9. an organic electroluminescence display panel, it is characterised in that there is multiple unit area on a substrate, the plurality of cellular zone Territory includes:

One compensatory zone, has a compensation light emitting element layer, and this compensation light emitting element layer includes:

One first electrode layer, is arranged at this substrate；

One hole injection layer, is arranged on this first electrode layer；

One hole transmission layer, is arranged on this hole injection layer；

One luminescent layer, is arranged on this hole transmission layer；

One electron transfer layer, is arranged on this luminescent layer；

One electron injecting layer, is arranged on this electron transfer layer；

One the second electrode lay, is arranged on this electron injecting layer；And

One compensation thickness is optional is arranged at this hole injection layer, this hole transmission layer, this electron transfer layer, the injection of this electronics On layer, this luminescent layer or this first electrode layer；And

One non-compensatory zone, has a light emitting element layer, and this light emitting element layer includes:

One first electrode layer, is arranged at this substrate；

One hole injection layer, is arranged on this first electrode layer；

One hole transmission layer, is arranged on this hole injection layer；

One luminescent layer, is arranged on this hole transmission layer；

One electron transfer layer, is arranged on this luminescent layer；

One electron injecting layer, is arranged on this electron transfer layer；And

One the second electrode lay, is arranged on this electron injecting layer, and wherein this compensation light-emitting component layer thickness is more than this light-emitting component Layer.

Organic electroluminescence display panel the most according to claim 9, it is characterised in that this compensatory zone and this non-compensating basin Territory is in order to send the coloured light of same color.