JPWO2019204078A5

JPWO2019204078A5 -

Info

Publication number: JPWO2019204078A5
Application number: JP2020557218A
Authority: JP
Publication date: 2022-04-15
Anticipated expiration: 2039-04-09

Claims

A method of making an organic light emitting diode (OLED) display.
In the process of preparing an OLED display panel, each comparison display panel among a plurality of comparison display panels equivalent to the OLED display panel except for one or more values of a plurality of design parameters has a viewing angle of 0. It has WPCS ^C ₄₅ , which is the maximum white dot color shift when changing from 45 degrees to 45 degrees, and WPAE ^C , which is the efficiency in the direction of the white dot axis, and the plurality of comparative display panels are in the WPCS ^C ₄₅ -WPAE ^C space. A performance curve is defined along the boundaries of the performance points, the performance curve extending from the first endpoint with the lowest acceptable efficiency to the second endpoint with the maximum acceptable white spot color shift WPCS ₄₅ ^LA , said. In the step of preparation, the OLED display panel has WPCS ⁰ ₄₅ , which is the maximum white spot color shift when the viewing angle changes from 0 to 45 degrees, and WPAE ⁰ , which is the efficiency in the direction of the white spot axis. ⁰ ₄₅ and ^WPAE ⁰ define the performance point of the display panel on the right side of the performance curve, and the distance from the performance point of the display panel to the performance curve along the WPCS _C45 axis is at least 0. A preparation step, including the step of selecting the plurality of design parameters, as in .005.
A step of disposing a color correction component on the OLED display panel, wherein the color correction component is a WPCS that is the maximum white point color shift when the display changes the viewing angle from 0 to 45 degrees. ₄₅ and a WPAE that is white point axial efficiency, the WPCS ₄₅ and WPAE are configured to define the performance points of the display above or to the left of the performance curve. And how to include.

The method of claim 1, wherein the preparatory step comprises selecting the plurality of design parameters such that WPCS ⁰ ₄₅ is larger than WPCS ₄₅ ^LA .

The preparation step includes a step of designing the OLED display panel, and the design step includes a step of specifying the plurality of design parameters and a color mixing of the OLED display panel at one or more inclined viewing angles. The method according to claim 1 or 2, comprising the step of selecting the values of the plurality of design parameters in order to intentionally cause a weight imbalance .

Prior to the selection step, a step of characterizing the color correction provided by the color correction component is further included, and in the selection step, the color correction provided by the color correction component is a color mixing weight. 3. The method of claim 3 , comprising the step of selecting the imbalance so as to at least partially correct the imbalance in.

The OLED display panel comprises a plurality of pixels, each of the pixels comprises a plurality of sub-pixels, each of the sub-pixels comprises a plurality of OLED layers, and the plurality of design parameters are the plurality of OLED layers. The method of claim 3 , comprising the optical thickness of each of the layers.

A method of making an organic light emitting diode (OLED) display.
In the process of preparing an OLED display panel, each comparison display panel among a plurality of comparison display panels equivalent to the OLED display panel except for one or more values of a plurality of design parameters has a viewing angle of 0. It has WPCS ^C ₄₅ which is the maximum white spot color shift when changing from 45 degrees to 45 degrees, WPAE ^C which is the efficiency in the direction of the white point axis, and BAE ^C which is the efficiency in the direction of the blue axis. The OLED display panel has at least one comparative display panel having WPCS ⁰ ₄₅ , which is the maximum white spot color shift when the viewing angle changes from 0 to 45 degrees, and WPAE ⁰ , which is the efficiency in the direction of the white spot axis. A preparation step including a step of selecting the plurality of design parameters so that the WPCS ^C ₄₅ is WPCS ⁰ _45-0.005 or less and the WPAE ^C is WPAE ^0-1 Cd / A or more.
In a step of disposing a color correction component on the OLED display panel, the color correction component is such that the display has WPCS ₄₅ , which is a maximum white point color shift at 0 to 45 degrees, and efficiency in the blue axis direction. WPCS ₄₅ is less than WPCS ^C ₄₅ +0.005, and BAE is configured to be at least 10% larger than BAE ^C , comprising a step of disposing. ..

An organic light emitting diode (OLED) display
A pixelated OLED display panel having WPCS ⁰ ₄₅ , which is a maximum white dot color shift at 0 to 45 degrees, and WPAE ⁰ , which is an efficiency in the direction of the white dot axis, and the pixelated OLED display panels are plural. A pixelated OLED display panel, each of which comprises a plurality of sub-pixels, and each of the sub-pixels comprising a plurality of OLED layers.
WPCS ₄₅ , which is a color correction component arranged on the pixelated OLED display panel and has a maximum white point color shift at 0 to 45 degrees, and WPAE, which is a white point axial efficiency. An organic light emitting diode (OLED) display comprising a color correction component, which is configured to have.
A plurality of comparative display panels that are equivalent to the pixelated OLED display panel except that the OLED layer has one or more different optical thicknesses are ^WPCSC with a maximum white point color shift at 0-45 degrees. With ₄₅ and a white point axial efficiency WPAE ^C , the plurality of comparative display panels define a first performance curve along the boundaries of the performance points in the WPCS ^C ₄₅ -WPAE ^C space.
A plurality of comparative displays equivalent to the display except that the OLED layer has one or more different optical thicknesses have a second performance curve along the boundaries of performance points in the WPCS ^C ₄₅ -WPAE ^C space. The second performance curve is above or to the left of the first performance curve, with the WPCS ₄₅ and WPAE defining the performance points of the display substantially along the second performance curve. death,
The second performance curve and the plurality of comparative displays define a third performance curve in the WPCS ^C ₄₅ -WPAE ^C space, at which time the plurality of performance points having performance points along the second performance curve. When the color correction component is removed from the comparison display for each comparison display among the comparison displays, a comparison display panel having performance points along the third performance curve is obtained, and the third performance curve is obtained. Is on the right side of the first performance curve, where WPCS ⁰ ₄₅ and WPAE ⁰ define the performance points of the display panel substantially along the third performance curve. display.

Among the plurality of comparative display panels, the WPCS ^C ₄₅ of the comparative display panel is WPCS ⁰ _45-0.005 or less, the WPAE ^C of the comparative display panel is WPAE ^0-1 Cd / A or more, and the WPCS ₄₅ is the comparative display. The display of claim 7 , wherein the panel is less than WPCS ^C ₄₅ .

The plurality of sub-pixels include a plurality of blue sub-pixels, each of the blue sub-pixels has a hole transport layer, and the thickness of the hole transport layer of the blue sub-pixels corresponds to the thickness of the comparison display panel. The display according to claim 8 , wherein the thickness of the hole transport layer of the blue sub-pixels is 1.02 to 1.1 times.

An organic light emitting diode (OLED) display
A pixelated OLED display panel having WPCS ⁰ ₄₅ , which is a maximum white dot color shift at 0 to 45 degrees, and WPAE ⁰ , which is an efficiency in the direction of the white dot axis, and the pixelated OLED display panels are plural. A pixelated OLED display panel, each of which comprises a plurality of sub-pixels, and each of the sub-pixels comprising a plurality of OLED layers.
WPCS ₄₅ , which is a color correction component arranged on the pixelated OLED display panel and has a maximum white point color shift at 0 to 45 degrees, and WPAE, which is a white point axial efficiency. With color correction components, which are configured to have
A plurality of comparative display panels equivalent to the pixelated OLED display panel, except that the OLED layer has one or more different optical thicknesses, are WPCS with a maximum white dot color shift at 0-45 degrees. Having ^C ₄₅ and WPAE ^C , which is the white point axial efficiency, the plurality of comparative display panels define a performance curve along the boundaries of performance points in the WPCS ^C ₄₅ -WPAE ^C space, and WPCS ₄₅ and The plurality of comparisons in which the WPAE defines the performance point of the display, the blue axial efficiency BAE of the display has the performance point along the performance curve, and the white point axial efficiency is within 5% of the WPAE. Of the display panels, an organic light emitting diode (OLED) display that is at least 10% greater than the blue axial efficiency BAE ^C of the first comparative display panel.

An organic light emitting diode (OLED) display
A pixelated OLED display panel having WPCS ⁰ ₄₅ , which is a maximum white dot color shift at 0 to 45 degrees, and WPAE ⁰ , which is an efficiency in the direction of the white dot axis, and the pixelated OLED display panels are plural. Each of the pixels comprises a plurality of sub-pixels, each of the sub-pixels comprises a plurality of OLED layers, and the pixelation is provided except that the OLED layer has one or more different optical thicknesses. A plurality of comparative display panels equivalent to the OLED display panel are WPCS ^C ₄₅ , which is the maximum white dot color shift at 0 to 45 degrees, WPAE ^C , which is the white dot axial efficiency, and blue axial efficiency. A pixelated OLED display panel having a BAE ^C and a WPCS ^C ₄₅ of WPCS ⁰ _45-0.005 or less.
WPCS ₄₅ , which is a color correction component arranged on the pixelated OLED display panel, and the display has a maximum white spot color shift at 0 to 45 degrees, and BAE, which is efficiency in the blue axis direction. An organic light emitting diode (OLED) display comprising a color correction component, wherein the WPCS ₄₅ is less than WPCS ^C ₄₅ +0.005 and the BAE is configured to be at least 10% larger than the BAE ^C. ..

An organic light emitting diode (OLED) display
A pixelated OLED display panel having a blue-to-red mixed color weight ratio β ⁰ ₃₀ at 30 degrees and a blue-to-red mixed color weight ratio β ⁰ ₄₅ at 45 degrees, β ⁰ ₄₅ > β ⁰ ₃₀ ≧ 1. A pixelated OLED display panel with 0.05 and 1.5 ≧ β ⁰ ₄₅ ≧ 1.1, and
A color correction component arranged on the pixelated OLED display panel, the blue to red mixing weight ratio of the display at 45 degrees is β ₄₅ , and the blue to red color of the display at 30 degrees. The color mixing weight ratio of is β ₃₀ , β ⁰ _{45-0.1 ≧ β 45 ≧ 2.1-β 0 45} _, ^and _β ⁰ _30-0.05 ≧ β ₃₀ ≧ 2.05-β ⁰ ₃₀ . An organic light emitting diode (OLED) display comprising a color correction component, configured as such.

An organic light emitting diode (OLED) display
A pixelated OLED display panel comprising a plurality of pixels, wherein each of the pixels has a plurality of sub-pixels, and each of the sub-pixels has a plurality of OLED layers.
BPCS ₄₅ , which is a color correction component arranged on the pixelated OLED display panel, which is the maximum blue dot color shift when the viewing angle changes from 0 to 45 degrees, and blue. With a color correction component, which is configured to have an axial efficiency BAE,
A first comparative display panel, which is equivalent to the pixelated OLED display panel, except that the OLED layer has one or more different optical thicknesses, when the viewing angle changes from 0 to 45 degrees. It has a BPCS ^C1 ₄₅ with a maximum blue dot color shift and a BAE ^C1 with a blue axial efficiency, the BPCS ^C1 ₄₅ is within 0.0025 from the BPCS ₄₅ , and is the BAE at least 10% larger than the BAE ^C1 ? Or,
BAE ^C1 is within 5% of BAE and BPCS ^C1 ₄₅ is at least 0.005 larger than BPCS ₄₅ , an organic light emitting diode (OLED) display.

The color correction component comprises a partial reflector depending on wavelength and polarization, the partial reflector comprises an optical laminate, the optical laminate comprises a plurality of optical repeat units, each of the optical repeat units. The difference in refractive index between the first polymer layer and the second polymer layer along the first axis, including the first polymer layer and the second polymer layer, is Δny and is orthogonal to each other. The difference in refractive index between the first polymer layer and the second polymer layer along the axis 2 is Δnx, | Δnx | is at least 0.1, and | Δny | is 0.04. With respect to the refractive index along the second axis, the optical repeat unit is a minimum optical thickness T1 close to the first surface of the optical laminate and a second opposite side of the optical laminate. Claimed to have a maximum optical thickness T2 close to the plane 2, with (T2-T1) / (T2 + T1) in the range 0.05-0.2, T2 being at least 350 nm and not more than 1250 nm. Item 6. The display according to any one of Items 7 to 13 .

The color correction component comprises a color correction film, wherein the color correction film is:
With a plurality of microlayers, each of the microlayers has a maximum difference of 0.05 or less between the three orthogonal indices of refraction at 550 nm, and each of the microlayers has three orthogonal indices of refraction at 550 nm. Has an average index of refraction, which is the arithmetic mean,
The plurality of micro layers are configured as a plurality of layer pairs consisting of alternating high refractive index micro layers and low refractive index micro layers, and the average refractive index of each of the high refractive index micro layers is the low refractive index micro. 0.15-0.75 greater than the average index of refraction of each layer,
Each of the plurality of layer pairs has an optical depth of 150 nm to 550 nm at 550 nm, and at least half of the plurality of layer pairs has an optical thickness of 275 nm to 400 nm at 550 nm.
The color correction film has a sufficiently small number of microlayers to transmit at least 80% of the photopicly weighted unpolarized visible light that is vertically incident.
The display according to any one of claims 7 to 13 , wherein the color correction film has a microlayer sufficient to reflect at least 15% of unpolarized light of at least one wavelength incident at 60 °.

The color correction component comprises a polymer film, the polymer film comprising a first polymer layer having two main surfaces, the first polymer layer.
A first polymer region containing a first material having a refractive index of n ₁ and
A second region comprising a network of interconnected pores and channels within the first polymer region, wherein the channel comprises a _second material having a refractive index of n2 and a second region. , Equipped with
The first material comprises a first elastic polymer material and optional particles.
The display according to any one of claims 7 to 13 , wherein the second material comprises a second polymer material and optionally particles, and / or air.

The color correction component comprises a polymer film, the polymer film comprising a first polymer layer having two main surfaces, the first polymer layer being void free.
A first polymer matrix having a refractive index of n ₁ and
Particles having a refractive index of n2 uniformly dispersed in the _first polymer matrix, present in an amount of less than 30% by volume based on the volume of the first polymer layer, and having an amount of 400 nm or more. The display according to any one of claims 7 to 13 , comprising particles having a particle size range of 3000 nm, where n ₂ is different from n ₁ .

The color correction component is any one of claims 7 to 13 , comprising a first layer and a second layer, and a nanostructured interface between the first layer and the second layer. The display described in item 1.